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Alex Bettinardi edited this page May 15, 2024
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- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area. Additionally, SWIM growth trends at the urban model area external stations can be used to improve external volume assumptions for future years and under large network scenarios (bypasses, freeway expansion).
- Outcome: In 2024 SWIM helped provide this information for; Bend-Redmond, Southern Oregon Model, Salem-Keizer, McMinnville.
- Purpose: ODOT research has been supporting research around the selection of animal crossing locations. SWIM information was requested to ensure that any locations being consider have the additional information about how land development and traffic growth are forecasted to change into the future (not building an animal crossing where people are in 20 years).
- Analysis Approach: The land use and traffic growth information was pulled for the entire state from SWIM and provided in shapefiles. For land use, both population growth and economic development were considered with a composite growth metric of population + 2 * employment. Any zone/area with significant land development was flagged. Additionally, Oregon's current Urban Growth Boundary (UGB) layer was provided with a 1 mile buffer. Any crossing being considered within 1 mile of an existing UGB should think twice and really ensure the location makes sense.
- Outcome: Multiple shapefiles and plots of the state were provided to help improve animal crossing location choices.
- Purpose: ODOT's RICS Unit (Roadway Inventory and Classification Services) is responsible for reporting current and future projected counts and VMT estimates. RICS utilizes travel demand models to better estimate (project) future volumes / VMTs. For roadway segments not covered by a travel demand model, the methodology had room for improvement. TPAU was asked to provide county and city VMT growth estimates that could be used to project future traffic volumes for areas not covered by local travel demand models. Note, TPAU provided this data in 2018 and 2022 as well. This 2024 data pull was a refresh of that work.
- Analysis Approach: SWIM growth trends were tabulated by area and aggregated to city and county totals (for model links, roadways outside of areas with local travel demand models). These summarized VMT growth rates by county and city were provided to the RICS unit.
- Outcome: The RICS unit gained another source of information to add to the methodology for projecting (growing) existing traffic volumes / VMT to future years for FHWA reporting. Additionally, this work compared the trends to the previous work provided in 2018 and 2022 and found that across the SWIM improvements/updates the trends were stable.
- Purpose: The purpose of this analysis is to provide estimated user costs associated with a complete closure on US-101 at the location of Beverly Beach, approximately between MP 133 and 135.
- Analysis Approach: SWIM analysis was run to estimate the user cost of closure detours.
- Outcome: User (autos & trucks) detour costs for one day of closure were provided, along with rerouting maps and volumes due to the closure / detour.
- Purpose: R4 identified they were studying High Bridge on US 97 (MP 97.3 - 115). SWIM was identified as an extra source of information for the study.
- Analysis Approach: The following information was identified to be provided from SWIM for the study:
- The percentage of freight traffic and how it is projected to change into the future (along with basic volume growth rate estimates)
- A commodity flow analysis of the types of freight commodities using that section of US97 and the amount of ton and value that travel that section of US97 each day (extra context to the value of US97 to the state)
- Additional context on how the use of US97 is projected to change into the future – how users of this section of US97 change into the future (are they traveling further, different commercial users/customers…)
- Outcome: Using SWIM select link analysis tool, the information above was isolated and reported on for the project area.
- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area. Additionally, SWIM growth trends at the urban model area external stations can be used to improve external volume assumptions for future years and under large network scenarios (bypasses, freeway expansion).
- Outcome: In 2023 SWIM helped provide this information for; Prineville.
- Purpose: ODOT needed to perform maintenance on the Boone Bridge. Three options were being considered. In the three construction options, there were night closures that would result in less impact to the traveling public but would result in bridge "fix" that would only last several years. Or the project could fully close off the NB direction of the Boone Bridge, allowing for a bridge fix that would last dozens of years, but would also cost the traveling public significantly (closing a heavily used, 4-lane section of I-5 for several weeks). SWIM was used to provide information about what the cost/delay impacts would be to the traveling public under each construction scenario.
- Analysis Approach: SWIM's select link analysis was performed to identify users of the Boone Bridge and then do before and after analysis of how the bridge is being used "today" (2025) vs how users would have to detour under the three different closure scenarios.
- Outcome: Delay costs under each of the closure scenarios were provided to the project team. Additionally, rerouting maps and impacts were shared and provided as well.
- Purpose: ODOT needed to pull together GHG PMs for the state based on the latest FHWA direction.
- Analysis Approach: Both OHAS data and SWIM data were used to provide context into setting those GHG targets. OHAS was used as a snap shot of Oregon driving metrics. SWIM was used to understand if high level state metrics like; VMT, Work related VMT, and work mode share were shifting over time, or if they are static.
- Outcome: Requested travel information was provided. SWIM trends did show movement in VMT and trip make up over the 20 year planning horizon, but the performance metric work was only looking out 4 years and there were no significant changes found over a 4 year interval.
- Purpose: The new Transportation Planning Rule (TPR), CFEC - Climate Friendly and Equitable Communities, laid out new rules for determining and reducing the impacts of GHG. Part of that new rule is revising the historic definition of Vehicle Miles Traveled (VMT) and considering how a city can take action to reduce their contribution to VMT and overall GHG. The new definition looks at all the VMT produced by a given city - not just the VMT that is within the city, but the entire amount of VMT produced by city residence. Under the new definition, it's important to understand how the proportion of VMT produced by different cities varies, in respect to how much city residence VMT stays within the city, vs within the larger regional metropolitan area vs in the larger (more complete geography), in this case the boundaries of Oregon's statewide model. Therefore, this analysis, was an investigation to the proportions of VMT that stay within the city vs the larger region (the state).
- Analysis Approach: The analysis builds on prior investigations using SWIM. This furthers past work, by looking at area (city) VMT both by the city that creates the VMT, but also where the VMT (trip) is destine. This extra detail, allows the VMT to be broken up into the VMT that stays within a region and that leaves the region (model area)
- Outcome: A table of all city jurisdictions, by the model regions the VMT is associated with.
- Purpose: DEQ needed to update their emission rates for the state. To support that work, ODOT provided the project with VMT estimates using both published HPMS data along with trends from SWIM.
- Analysis Approach: The approach was to use reported 2022 VMT data at the State level. For the State system (state maintained roadways), published traffic flow data was used as the VMT by county by class. Of the state roadway system, county level aggregations VMT by class were used and then grown up to 100% of off state system VMT using the SWIM off state trends for the system. (ODOT's off state system VMT is only on sample sections of roadway, not the VMT for the entire system, like we have for the stated owned/maintained system). This analysis approach follows on the approach taken in the 2021 Request.
- Outcome: Using a mix of published VMT and SWIM 2022 trends, a table of VMT by county and the 13 vehicle classes was delivered to DEQ.
- Purpose: Monmouth was developing a TSP. It was determined that SWIM growth rates would add helpful information, along with other sources of information to help develop the future year volume estimates for the city.
- Analysis Approach: The reference SWIM scenario existing and future year volumes were used to develop linear annual growth estimates for the main roads going through Monmouth.
- Outcome: The linear annual growth rates for major route were calculated from SWIM were provided for use in the TSP. Additionally, the Future Volume Table that TPAU develops which creates and provides future growth on Oregon state highways was provided to the project, so that the TSP could consider both SWIM (modeled) and historic trends in developing a range or sensitivity of what the future growth will look like. That additional historic trend information (Future Volume Table) is found on the web here - https://www.oregon.gov/odot/Planning/Pages/APM.aspx.
- Purpose: Project Analysis was occurring along OR22 at the intersection with OR51 in West Salem. This location was outside the bounds of the Salem travel demand model. So SWIM provided the best available source of future forecast information.
- Analysis Approach: The reference SWIM scenario existing and future year volumes were used to develop linear annual growth estimates for the intersection of OR22 and OR51.
- Outcome: The linear annual growth rates for major route were calculated from SWIM were provided for use in the project. Additionally, the Future Volume Table that TPAU develops which creates and provides future growth on Oregon state highways was provided to the project, so that the project could consider both SWIM (modeled) and historic trends in developing a range or sensitivity of what the future growth will look like. That additional historic trend information (Future Volume Table) is found on the web here - https://www.oregon.gov/odot/Planning/Pages/APM.aspx.
- Purpose: ODOT's climate office was developing two grant proposals to help establish additional freight charging capabilities on I-84 and I-5. Some current information was available, but SWIM was needed to understand future truck growth on the interstates to properly describe the potential value of the project for the grant proposal. SWIM also was used to provide how trucks were using a handful of key shipping regions in Oregon (PDX, The Dalles, Boardman, Baker City, Pendleton).
- Analysis Approach: The existing SWIM reference scenario was used to provide an estimate for expected Truck VMT growth on I-5 and I-84, along with flow maps for the 5 key areas of interest.
- Outcome: 10 year growth estimates and flow maps for I-5 and I-84 were provided to the climate office for their grant proposals.
- Purpose: The Rail Crossing in Reedsport was reviewed, and SWIM data was requested to provide future growth information for US 101 and OR 38 in Reedsport to support the review of the rail crossing.
- Analysis Approach: Reference scenario growth rate information was provided for the requested area in Reedsport.
- Outcome: Annual linear growth rates calculated from reference scenario future and base year volumes from SWIM were provided for US 101 and OR 38 in Reedsport.
- Purpose: The purpose of this application was to identify commodities flowing across the Interstate-5 bridge over the Columbia River originating from Oregon Senate and House Districts to demonstrate the freight/economic role this bridge plays across the entire state.
- Analysis Approach: SWIM relies on national FAF data for Oregon commodity flows, which are disagregated within SWIM into analysis zones, which were translated into legislative district flows: 30 Senate Districts and 60 House Districts.
- Outcome: Commodity flows were reported for each district, but included results for the Interstate-205 bridge because the two bridges serve as route alternatives and trucks switch between bridges when necessary. This is an essential aspect of the role of bridge crossings over the Columbia River and how freight moves under real-world conditions.
- Purpose: The purpose of this application is to report 2020 VMT estimates by Oregon County for FHWA vehicle classifications in order to provide heavy truck share of total statewide VMT in Eastern Oregon.
- Analysis Approach: The Oregon Department of Environmental Quality requests VMT estimates by county annually, so this data was used and enhanced by splitting VMT out by vehicle class.
- Outcome: A table of 2020 VMT by vehicle class for each county was prepared.
- Purpose: Curry County was developing a County Level TSP. This largely focused on US 101 (a major statewide highway). It was determined that SWIM growth rates could be used for US101, along with other sources of information to help develop the future year volume estimates for US 101 through Curry Co.
- Analysis Approach: The reference SWIM scenario existing and future year volumes were used to develop linear annual growth estimates for the US 101 sections in Curry Co.
- Outcome: The linear annual growth rates for each segment of US 101 calculated from SWIM were provided for use in the Curry Co TSP. Additionally, the Future Volume Table that TPAU develops which creates and provides future growth on Oregon state highways was provided to the project, so that the Curry County TSP could consider both SWIM (modeled) and historic trends in developing a range or sensitivity of what the future growth on US101 will look like. That additional historic trend information (Future Volume Table) is found on the web here - https://www.oregon.gov/odot/Planning/Pages/APM.aspx.
- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area. Additionally, SWIM growth trends at the urban model area external stations can be used to improve external volume assumptions for future years and under large network scenarios (bypasses, freeway expansion).
- Outcome: In 2022 SWIM helped provide this information for; Metro, Salem-Keizer and Roseburg.
- Purpose: The purpose of this application is to create a case study exploring the range of potential economic impacts of climate-related events across Oregon over time. The hazards explored relate to coastal sea level rise, flooding, erosion, increased rainfall, landslides, wildfire risk, and snow/ice events.
- Analysis Approach: 11 locations across the state were identified as at-risk locations. For each location, 3 scenarios were developed: one day closure forcing users to detour, increasing incidence of disruptions over 20 years, and worst case scenario with closure when mitigation is beyond agency resources.
- Outcome: Impacts under each scenario produced monetized user detour costs, followed by forecast impacts to population, employment, VMT, and GDP in the county with the hazard location, as well as other counties impacted by the disruption indirectly.
- Purpose: The purpose of this application is to represent the STIP projects on the SWIM network and estimate impact to VMT. VMT estimates are placed into the HPMS NHS data set, run through the HERS-Or model and a post-processor to estimate GHG.
- Analysis Approach: VMT estimates are placed into the HPMS NHS data set, run through the HERS-Or model followed by a post-processor to estimate GHG.
- Outcome: SWIM provided VMT estimates for all NHS highways.
- Purpose: SPR 843 objective is to develop a investment prioritization framework for ODOT to mitigate locations with high risk of climate impacts related to rising sea levels, flooding, and landslides.
- Analysis Approach: SWIM scenarios were run to estimate the economic impacts to five locations with respect to immediate impacts to user cost of closure detours and long term impacts of repeated closures/permanent closures, reporting results for changes in population, employment, traffic patterns, and commodity flows.
- Outcome: User (autos & trucks) detour costs for one day of closure were provided along with 20 year forecasts of population, employment, traffic flows, and commodity flows.
- Purpose: The Hood River Bridge across the Columbia is a toll bridge. The bridge authority hired the consulting firm WSP to conduct a toll analysis for the bridge rehab work required. SWIM was identified as the best source of information for that study.
- Analysis Approach: WSP contacted ODOT to obtain base and future year land use and travel patterns for the community of Hood River and surrounding area (a large enough area to capture the significant user base of the bridge). WSP used that 2019 and 2040 data from SWIM to create a focused model based on more recent land use data and traffic counts.
- Outcome: The team was successful in creating a focused model for Hood River largely based on the data provided from SWIM and complete the bridge analysis.
- Purpose: Different vehicle and fleet rules were anticipated to apply to freight traffic/trucks from the West Coast vs States to the East of the West Coast. ODOT’s climate office needed to understand the percentage of truck traffic on Oregon roadways that originate (the trucks are registered) from States East of the West Coast. SWIM doesn’t track where the vehicles are registered, but SWIM can be used to calculate VMT by O-D pairs or users. SWIM was used to calculate VMT for Trucks crossing the Eastern border to Oregon.
- Analysis Approach: This analysis utilized the Select Link process for I-84 and US95 links on the Oregon boundary. These two major Eastern boundary routes were identified as locations in SWIM that could best approximate the Trucks on Oregon roadways that would likely be registered to States East of the West Coast
- Outcome: The select link analysis was used to identify the amount of VMT entering Oregon from the East versus all other daily truck VMT on Oregon roads.
- Purpose: SWIM was used to provide commodity flow data for US26 east of Portland, including Cornelius Pass Rd
- Analysis Approach: This analysis utilized the Select Link process designed to pull commodity flow data from SWIM.
- Outcome: deliverable was a table with total commodity flows in dollars and tons for year 2019 at 8 locations by direction.
- Purpose: ODOT was working to identify where the best locations for EV charging stations would be on the highway system.
- Analytical Approach: Originally, a site by site select link analysis was proposed to look at the travel patterns and percentage of long distance trips at a variety of locations, but the project brainstormed a quicker way to provide this information would be to segment the trip table into long trips (greater than 50 miles) and short trips and then assign long and short tagged trips to the network. This allows the entire state to be reviewed in one data product and each sight can be reviewed for how many long distance trips pass that spot.
- Outcome: A shapefile for the state where long and short distance trips are tabulated on each link separately was provided to inform EV charging station placement.
- Purpose: The ODOT Freight Unit was updating the Oregon Freight Plan (OFP). The SWIM request was to help update multiple figures and analysis from the past OFP.
- Analytical Approach: The request was to use the latest SWIM and FAF data (5.2) to provide the same tables and figures that were in the past OFP. A new SWIM scenario with FAF 5.2 input was run and then the previously provided information was provided using the latest SWIM run.
- Outcome: Updates to the requested tables and figures were provided.
- Purpose: ODOT's RICS Unit (Roadway Inventory and Classification Services) is responsible for reporting current and future projected counts and VMT estimates. RICS utilizes travel demand models to better estimate (project) future volumes / VMTs. For roadway segments not covered by a travel demand model, the methodology had room for improvement. TPAU was asked to provide county and city VMT growth estimates that could be used to project future traffic volumes for areas not covered by local travel demand models. Note, TPAU provided this data in 2018 as well. This 2022 data pull was a refresh of that work.
- Analysis Approach: SWIM growth trends were tabulated by area and aggregated to city and county totals (for model links, roadways outside of areas with local travel demand models). These summarized VMT growth rates by county and city were provided to the RICS unit.
- Outcome: The RICS unit gained another source of information to add to the methodology for projecting (growing) existing traffic volumes / VMT to future years for FHWA reporting. Additionally, this work compared the trends to the previous work provided in 2018 and found that across the SWIM improvements/updates the trends were stable.
- Purpose: ODOT Research Project SPR 843 “US-101 Coastal Hazard Vulnerability and Risk Assessment for Mitigation Priorities” requested economic impact analysis of permanent closure for 5 locations on US-101.
- Analytical Approach: SWIM 10-year scenario runs were prepared for each location with the highway open and closed.
- Outcome: Economic metrics related to changes in population, employment and other metrics were compared with and without closure side-by-side.
- Purpose: ODOT Region 4 (Deschutes County) requested estimates of the impacts to travelers detouring around 6 separate project locations.
- Analysis Approach: SWIM Select Link process was used to simulate travel time and distance for highway users at each project location in order to measure the travel costs associated for each location closure.
- Outcome: Travel costs were monetized and provided for staff to effectively manage the construction project scheduling and contracting.
- Purpose: ODOT Research Project SPR 843 “US-101 Coastal Hazard Vulnerability and Risk Assessment for Mitigation Priorities” requested estimates of the impacts to travelers detouring around 5 potential landslide locations.
- Analysis Approach: SWIM Select Link process was used to simulate travel time and distance for highway users at each project location in order to measure the travel costs associated for each location when closed.
- Outcome: Additional travel time and out-of-direction distance were monetized and provided to the research team to assist in developing recommendations in prioritizing mitigation investments over time.
- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area. Additionally, SWIM growth trends at the urban model area external stations can be used to improve external volume assumptions for future years and under large network scenarios (bypasses, freeway expansion).
- Outcome: In 2021 SWIM helped provide this information for; the Bend-Redmond Model (BRM) and Roseburg.
- Purpose: ODOT Research Project SPR 843 “US-101 Coastal Hazard Vulnerability and Risk Assessment for Mitigation Priorities” requested commodity flow data for 72 locations on US-101.
- Analysis Approach: This analysis utilized the Select Link process designed to pull commodity flow data from SWIM.
- Outcome: deliverable was a table with total commodity flows in dollars and tons for year 2019 at all locations by direction.
- Purpose: An outside group STEER was conducting a project for Amtrak and desiring SWIM network and trip information.
- Analysis Approach: Existing SWIM network and trip information was provided.
- Outcome: STEER received the information they requested and were able to continue their analysis.
- Purpose: Development of Chehalem Winery was being considered which would enter onto 99W - Approximate Location. This location was near the county boundary and was right inbetween the Newberg and Metro area model areas, such that neither model would be well suited to inform the growth for the project. It was determined that SWIM should be used to provide additional information on the growth rates for 99W.
- Analysis Approach: SWIM growth trends for several SWIM scenarios were pulled and plotted.
- Outcome: The SWIM growth trends were utilized (along with engineering judgment and project context) to better estimate future background volume information to inform the TIA for Chehalem Winery.
- Purpose: DEQ was working with UC-Davis to estimate emissions under different fuel scenarios. To help with that request, ODOT provided the project with VMT estimates using both published HPMS data along with trends from SWIM (a special note that this same basic request (with some small differences) was performed for two different requests for DEQ during 2021 (once in June and once in December).
- Analysis Approach: The project team ultimately wanted VMT by county by vehicle class for two years. ODOT estimates VMT on the State (ODOT maintained) system by 13 vehicle classes. The published information for 2017 was tabulated to the County level and provided. For 2035 SWIM was used to grow auto and truck VMT separately for each of Oregon's counties. This created a 2035 VMT file by County and the 13 vehicle classes. Less is known about the VMT off State owned facilities, but ODOT does collect VMT samples and then estimates the total. The 2017 Total VMT value for the State (all roads) was used and the state system was subtracted leaving just off-state VMT for the State. This off-state VMT number was compared to SWIM's off-state VMT estimate for 2017, and a factor to grow SWIM to the full VMT off-state system was calculated. SWIM's off-state VMT was then tabulated by County and Functional class. ODOT estimates VMT percentages by vehicle class by functional class for the state each year. So this information was used to convert SWIM's functional class into vehicle class. Resulting in a SWIM tabulation of off-state system VMT by County by vehicle class, as requested. This was then factored up to the full off-state VMT reported by the state for 2017. That same factor and process was used for 2035 off-state VMT. SWIM was again tabulated to VMT by county by vehicle class (in the same way as 2017, but using 2035 information), and the 2017 factor to grow to full off-state VMT was again applied.
- Outcome: Four summary files were provided with all the VMT information requested for 2017 and 2035 (for each year a state system and a non-state system VMT file was provided, totaling four files delivered).
- Purpose: Planning and design was being conducted to expand I-5 to 3 lanes in each direction from Kuebler to Delaney interchange. This project was right on the boarder of the Salem-Keizer model area (travel models are not as good at providing future forecast information at their boundaries), so SWIM information was requested for the project.
- Analysis Approach: Volume trend information was pulled from SWIM for the locations, summarized and reported.
- Outcome: The request was completed and traffic growth information was provided for the project area.
- Purpose: Planning and design was being conducted for OR 126 West of Eugene out to Veneta (expanding the 4 lane cross section west). No urban model covered this project area, so SWIM information was requested for the project.
- Analysis Approach: Volume trend information was pulled from SWIM for the locations, summarized and reported.
- Outcome: The request was completed and traffic growth information was provided for the project area.
- Purpose: Various conversations were occurring between ODOT, DLCD and other partners on how to establish and set target rules regarding GHG and other metrics. ODOT used SWIM to help provide information on how different VMT measures can produce different information. The point being to help inform how measures are defined and set in working to ensure that the chosen measure would help guide and inform the desired outcome (in this case around GHG goals).
- Analysis Approach: Two pricing scenarios were run (a high and a low). These two scenarios were meant to represent the bookends of pricing policy from the STS (Statewide Transportation Strategy) work. Three types of VMT were pulled from SWIM for each MPO area for these two scenarios and a reference (no change in operating cost / price - cost assumed to rise with inflation). The three types of VMT were; II - internal personal auto VMT (meant to approximate the current TPR definition), household VMT (meant to approximate the STS VMT calculation where VMT is tabulated at the household level and unbound by a given region - like MPO boundary - can be thought of like Odometer VMT for the household), and Area roadway VMT where all roadway VMT within an MPO boundary is tabulated (can be thought of as the most traditional way of thinking of VMT).
- Outcome: All three VMT definitions were tabulated and compared across the three scenarios. II-VMT showed that the smaller the regional boundary the less sensitive the measure was to pricing change. II VMT should be used for understanding the potential for small/local projects (parking pricing, new routes, bike/walk lanes...), but is a poor measure for any larger scale project or policy. STS VMT (odometer) was very consistent across all MPOs and showed high sensitivity to the pricing policy tested and is anticipated to show good project/policy sensitivity across a wide array of projects. Area/Roadway VMT is very sensitive to whether or not a large regional roadway (like I-5 or US 97) travels through the region (MPO) with heavy through volumes (not stopping in the region). Because of this, Area/Roadway VMT is not a consistent measure to use across regions.
- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area. Additionally, SWIM growth trends at the urban model area external stations can be used to improve external volume assumptions for future years and under large network scenarios (bypasses, freeway expansion).
- Outcome: In 2020 SWIM helped provide this information for; Newberg (bypass testing, including 3-phase of the bypass analysis), CALM (I-5 expansion testing).
- Purpose: ODOT Region was conducting an IAMP at Brooklake Exit 263. Future Volume Table data was obtained for the interchange, but that did not include PM peak hour growth rate, or information on Brooklake. Similar to previous work SWIM was used as the only available model to help provide information on future growth information for Pruner Road and the adjacent interchange on I-5.
- Analysis Approach: SWIM growth trends for several SWIM scenarios were pulled and plotted and tabulated.
- Outcome: The SWIM growth trends were utilized (along with engineering judgment and project context) to better estimate future background volume information to complete the Brooklake IAMP.
- Purpose: ODOT Region 1 requested commodity flow data at 26 locations by direction for the Region 1 Transportation Performance Report.
- Analysis Approach: The work built off of their previous commodity flow analysis using SWIM.
- Outcome: The information provided by SWIM illustrates the amount of freight moving on the freeway system in the Portland region.
- Purpose: For several reasons it was desired to pull select link data from SWIM, partially for OD checking and understanding, and partially to pull traveler characteristics for specific links to compare to other sources of information like streetlight.
- Analysis Approach: SWIM select links were conducted with produce trip table subsets that only include trips that use a given link. Since users/travelers are identified in the trip table, traveler profiles could be built for select links as well as the more standard output of understanding O-D patterns. This allows for profiles around income, employment status, household size, trip purpose, can be built for specific links / corridors.
- Outcome: In 2020 this approach was used multiple times to; compare SWIM results to Streetlight for the value pricing work, to review user characteristics for other corridors in R1, and to review OD patterns for OR22 for the Grand Ronde analysis.
- Purpose: During planning for a potential SB auxiliary lane for the Boone Bridge replacement, ODOT desired to understand potential impacts to land use and travel shifts. SWIM was desired for this analysis, specifically because of SWIM's ability to have land use respond to the new bridge auxiliary lane.
- Analysis Approach: A build scenario where a SB aux lane was added to the Boone Bridge to compare to the reference run without the aux lane. Land use, volume, and VMT data was then pulled from both scenarios and then compared and difference reported.
- Outcome: The analysis found that the addition of the SB aux lane resulted in very minor (less than 5-10%) increases on the Bridge and surrounding roadways. Regional VMT grew at near zero (<1%), and land use growth patterns were not impacted in any measurable way, both for the larger region, but also the immediate area.
- Purpose: There was an internal (ODOT) desire to understand statewide VMT trends from SWIM and compare those to other sources (projections) of VMT, specifically VisionEval and GreenSTEP.
- Analysis Approach: A previous script was written to answer a similar question of comparing SWIM VMT to the VMT estimated from urban models within Oregon. That script pulled SWIM VMT by specific regions in three ways;
- Tabulating VMT from SWIM network links for both Auto and Trucks for links within certain regions,
- Tabulating VMT from the trip table records based on the VMT generated by households within a certain region (household VMT), and
- Tabulating VMT from the trip table records based on the two end points of the trip being inside a given region (this is II VMT comparable to how VMT is sometimes calculated in urban models).
- Outcome: VMT was tabulated from SWIM results at a statewide level (as well as for the MPOs in Oregon) to compare to VisionEval, GreenSTEP, and other VMT sources.
- Purpose: The purpose of this analysis was to quantify truck freight by commodity passing by an I-5 interchange being redesigned to accommodate rising demand and truck accessing a major regional truck stop creating hazardous conditions and congestion. This location is also a freight bottleneck identified in a previous study.
- Analysis Approach: Data was used from a previous request by R1 for commodity flows on that highway segment. SWIM estimates are average weekday flows, which were transformed into an annual figure using ATR 03-011 (Wilsonville) to evaluate heavy truck days and average months to create a factor to annualize the daily flows.
- Outcome: deliverable was a table with total commodity flows in dollars and tons for year 2019.
- Purpose: The purpose of this analysis was to provide commodity flow data for four locations in the Oregon Coast Range and provide information quantifying the economic impact landslides have on transportation system users. This information was requested to support an ODOT Research study related to landslide mitigation and prioritization.
- Analysis Approach: Highway closure due to landslides was simulated using SWIM. Vehicles passing through the landslide locations were tagged using the Select Link process to identify the detour routes taken when the highway was closed. The travel time and distance for the two different routes were compared, distance and time costs monetized for cars and trucks separately. Commodities shipped via this route were reported as well. Trucks are restricted from routes cars can use, so the detours cos-ts were different for the two groups.
- Outcome: Matrices of commodity flows for each location and estimated user costs for time and travel distance for each closure location
- Purpose: ODOT Region 2 was testing the potential to expand I-5 to 3 lanes in each direction from the Salem area (Delaney) to OR 34. Both the SWIM model and the CALM model were used to evaluate the impacts of the potential expansion. SWIM was used to both inform on potential impacts (growth changes) to the external stations of the CALM model, as well as to provide future trend information for the sections of I-5 between the CALM boundary (Marion/Linn County Boundary) and the Salem area (Delaney).
- Analysis Approach: Two scenarios were modeled in SWIM setting the I-5 completion date at different points in the future (to test the sensitivity of the result to the project completion date). The network for these two scenarios were identical; I-5 was expanded to 3 lanes in each direction from OR34 up to Delaney interchange.
- Outcome: The two test showed that the completion date did not seem to have a significant impact on the results, suggesting that there was not much landuse / development reaction. However, these test only went out to 2040, perhaps a larger land use response would occur if the test was further into the future. In the future year (2040) daily traffic along I-5 increased approximately 10% with the addition of a third lane in each direction. This traffic was diverted from 99W and other North-South routes near to I-5.
- Purpose: FedEx reached out to ODOT to request travel time growth projections for approximatly a dozen shipping routes that FedEx uses.
- Analysis Approach: Routes were defined on the SWIM network using Visum's path search functionality. Search paths allows the user to sequentially tag all link segments for a given selected path. With a series of links selected VolumePull.R was used to analyze the series of links. VolumePull.R was slightly modified to produce total VMT and travel time growth (by the four travel time periods) across all links for each identified path (VMT and travel time totalled across all links in the path).
- Outcome: A memo was developed summarizing the growth for the requested routes along with a series of cavaets. An important cavaet was around the potential for COVID-19 to impact traffic growth patterns over the next 5 years. The memo advised FedEx to use the growth (VMT) assumptions per route along with the travel time growth projections so that it's not just assumed that travel times will increase into the future (over the next 5 years). Travel times would only be assumed to increase if traffic volumes continue to increase, as they have over the last several years.
- Purpose: ODOT has preparing to update the Oregon Transportation Plan (OTP). Part of that preperation included developing several white papers, one of those white papers was focused on understanding demographic and economic trends into the future. To support that analysis, SWIM was used to provide commodity flow trends into the future for various regions in Oregon.
- Analysis Approach: The current reference scenario was used to pull Buy Sell information output from AA. The Buy Sell data was aggregrated to Oregon Counties and to 10 commodity categories for each year. This was done for commodity production and consuption totals for each Oregon county. The Buy Sell matrix is in units of value (dollars). In addition to dollars (value) the production and consumption totals were also provided in Tons using the dollars per ton converstion rates that SWIM uses.
- Outcome: A summary table of production and consumption commodotiy flow totals was provided for all 36 Oregon counties for each year into the future. This was produced for both value and tons in support of development of information and trends towards the OTP.
- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area.
- Outcome: In 2019 SWIM helped provide this information for; the Southern Oregon Model, Metro, and Salem-Keizer.
- Purpose: The purpose of this analysis was to prepare two case study examples quantifying the economic impact landslides have on transportation system users.
- Analysis Approach: Highway closure due to landslides was simulated using SWIM. Vehicles passing through the landslide locations were tagged using the Select Link process to identify the detour routes taken when the highway was closed. The travel time and distance for the two different routes were compared, distance and time costs monetized for cars and trucks separately. Commodities shipped via this route were reported as well. Trucks are restricted from routes cars can use, so the detours costs were different for the two groups.
- Outcome: Technical memo written in a manner to be incorporated into a larger ODOT publication related to landslide risk.
- Purpose: ODOT was investigating freight parking need, capacity, and logistics along the major highways in Oregon. ODOT-TPAU was asked to provide truck specific growth rates for 18 identified highways segments across the state.
- Analysis Approach: All the links along the 18 highway segments (several hundred links) were tagged and then the truck volumes where totaled through time (along with link mileage) to create segment total VMT's for multiple years into the future.
- Outcome: The information was used to calculate linear growth rates for each segment, which in turn were used to estimate future growth along each highway section to assess future trucking and freight demand for parking facilities.
- Purpose: Port of Cascade Locks is evaluating options to reconfigure traffic flow at key locations near the port. They requested volumes and annual traffic growth rates for 3 locations - Bridge of the Gods, Wa-Na-Pa Street, Frontage Road/Exit 44 ramp.
- Analysis Approach: select link process was used to pull information from SWIM network, validated against nearby ATR, future volume was used to estimate an average annual growth rate.
- Outcome: For each location AADT was provided for year 2020, truck share of AADT and the forecast average annual growth rate out to year 2040.
- Purpose: Project development was being conducted along OR 18 near the Spirit Mountain Casino. The project had near by continuous counter information, but was looking to SWIM for additional data / information on future growth trends for the OR 18 corridor.
- Analysis Approach: SWIM growth trends for several SWIM scenarios were pulled and plotted.
- Outcome: The SWIM growth trends were utilized (along with engineering judgment and project context) to better estimate auto and truck traffic patterns along OR 18 for future year analysis.
- Purpose: For TPAU's VisionEval-State (VE-State) development information about how employment is distributed across counties is needed. SWIM was accessed to get the proportional split of employment by MPO, town, and rural across Oregon's 36 counties.
- Analysis Approach: SWIM was one viable data source LEHD was another. Part of this work (besides providing the SWIM employment data) was assessing how much SWIM estimated a change in MPO/town/rural split by county over time. The idea being that if there was a lot of change over time SWIM should be used, but if SWIM was showing that it was a fairly static relationship LEHD could be used.
- Outcome: The analysis showed that there were only minor changes in MPO/town/rural percentage changes by county as SWIM grew land use into the future, so it was determined to use LEHD data as the source of information for the VE-State input on percentage of land development by area category by county.
- Purpose: ODOT's Research Section requested statewide accessibility data from SWIM. The goal was to use accessibility information in a research project related to reviewing / evaluating the Streetlight data product.
- Analysis Approach: Total Population and Employment was reported by travel time from a given SWIM zone. Meaning that for zone "i" how many people and jobs are within 10, 20, 30, or a 60 minute travel time.
- Outcome: SWIM's zonal accessibility information was provided, assisting the research project's continued work.
- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area.
- Outcome: In 2018 SWIM helped provide this information for; the McMinnville, Newberg, Newport, the Southern Oregon Model, and Woodburn model areas. Extra analysis of note - SWIM was also used to answer growth questions for the McMinnville area, and to help provide high level regional employment growth (2045) totals for the Southern Oregon Model region.
- Purpose: The Hood River Bridge 10-year-old Draft Environmental Impact Statement (EIS) was in the process of being updated. As part of the EIS update the consultant desired to check historic traffic growth trends with growth information from SWIM. Additionally, the consultant was interested in how truck type percentages might change if the bridge were to become more attractive (via toll rates or geometrics) and how sensitive the overall demand for the bridge might be to varying toll rates.
- Analysis Approach: Several pieces of information (SWIM analytics) were utilized for this work. First SWIM growth information for the bridge was tabulated (as is been described in many examples below). Second, a SWIM "select link" analysis was conducted on for the traffic using the bridge to analyze the vehicle types (and percentages) using the bridge and their origin and destination patterns. Third, the current year demand was reassigned multiple times under increasing toll assumptions. The resulting assigned volume on the bridge was recorded for each toll amount tested. The result was a curve of the auto and truck traffic's response to potential bridge tolls.
- Outcome: The three products described under the Analysis Approach were summarized and sent to the consultant. The information helped further improve the Hood River Bridge's EIS update.
- Purpose: ODOT Region 2 was working with a consultant to develop a plan for OR 126. To help support that work, the consultant requested commodity flow information for the intersection of OR 126 and Main.
- Analysis Approach: As of this time many similar commodity flow products had been provided. A relatively streamlined analysis conducted and somewhat standardized excel summary file was developed and delivered. The requester was familiar with the Bend Area analysis and so that's what this analysis most closely followed (built off of).
- Outcome: Commodity flow data was provided for OR 126 in Springfield, further improving the understanding and conversation around how OR 126 is used.
- Purpose: Development was being considered along Pruner Road which has interchange access to I-5 at Exit 103. Historic traffic count data was obtained for the interchange, but the consultant completing the TIA had no existing source of information to grow the background traffic data to the future analysis year. Similar to previous work SWIM was used as the only available model to help provide information on future growth information for Pruner Road and the adjacent interchange on I-5.
- Analysis Approach: SWIM growth trends for several SWIM scenarios were pulled and plotted.
- Outcome: The SWIM growth trends were utilized (along with engineering judgment and project context) to better estimate future background volume information to complete the TIA along Pruner Road.
- Purpose: ODOT's Transit Section had determined to move forward on a more formal study of transit opportunities, helped in part by SWIM analysis provided earlier. At this stage they had hired a consulting firm to help them complete their study. The project team was hoping to get further information from SWIM to further improve their study.
- Analysis Approach: The requested approach was similar to previous work where Origin-Destination (OD) information is used to identify key areas (corridors) of opportunity or interest.
- Outcome: The requested OD information was provided, assisting in the further development of the Transit Network Study.
- Purpose: ODOT Region 2 Area 1 staff had requested information related to congestion and travel for the Counties of Clatsop and Tillamook. The request involved information from multiple sources including; ATRs, HERE, HERS, and SWIM. Commodity flow data was to be provided from SWIM.
- Analysis Approach: The work built off of (followed) previous commodity flow analysis from SWIM.
- Outcome: The information provided by SWIM and other sources helped in ODOT Region 2's understanding of the congestion and travel in Region 2 Area 1.
Supporting Park-and-Ride Location Analysis for the Oregon Cascades West Council of Governments (OCWCOG) (2018)
- Purpose: OCWCOG was developing a plan to locate and prioritize park-and-ride locations throughout the Linn, Benton, and Lincoln Counties area. SWIM was called upon to help provide Origin-Destination (OD) information throughout the region and to help provide insight into the types of trips (purpose and vehicle occupancy) for select locations of interest throughout the region.
- Analysis Approach: OCWCOG staff worked to group the three county region into approximately 20 districts for OD analysis. The OD patterns were then provided for those districts. Additionally some analysis and testing was done of providing detailed simulated (from SWIM) trip records of vehicles / travelers passing by select park and ride locations. This was done via SWIM's select link feature. Where links near potential park-and-ride locations were tagged, and then the users (travelers) crossing that link were filtered out and their statistics summarized for analysis.
- Outcome: The information provided helped to better inform OCWCOG park-and-ride anlaysis..
US Corridor Freight Plan Website
- Purpose: ODOT Region 4 was conducting the second phase of the US 97 Freight Plan. As part of that effort 2040 value and ton commodity flows were to be provided from SWIM to help better understand how US 97 was being used as a Freight Corridor. A secondary element was also requested from SWIM, which was a resiliency analysis where sections of US 97 were hypothetically closed to assess the impact to traffic that would need to re-route. The concept being that sections of US 97 with shorter detours would be more resilient.
- Analysis Approach: The commodity proportion of the project built off of (followed) previous commodity flow analysis from SWIM. The resiliency aspect of the work follow a methodology similar to the coastal route closures work, where a "select link" procedure within SWIM is used to identify users of a given facility and then reassign them after the facility (roadway) is hypothetically closed.
- Outcome: The information provided by SWIM helped successfully complete Phase 2 of the US 97 Freight Plan.
- Purpose: ODOT Region 1 had requested truck travel time reliability information (to be provided from HERE data) and commodity flow data (to be provided from SWIM) for the Region 1 Transportation Performance Report.
- Analysis Approach: The work built off of (followed) previous commodity flow analysis from SWIM.
- Outcome: The information provided by SWIM and HERE helped create a more complete Region 1 Transportation Performance Report.
- Purpose: ODOT's Office of Innovation was looking for additional information to help in their understanding of existing travel behavior. They had request trip length characteristics over the course of a day for 7 corridors in the Portland-Metro area.
- Analysis Approach: This request was greatly streamlined as the process to provide the requested information had already been created under the value pricing analysis. The technique tags specific traveler records with the routes and link segments that they travel. The miles on those link segments (like sections of I-5 through Portland as an example) can then be totaled up to find out how long the trips are on average (or build a travel distance profile) for a give section of roadway.
- Outcome: The method previously developed was successfully and quickly transferred to this application, getting the customer the information they were looking for, but also working to build a new standardized analysis technique of SWIM's output.
- Purpose: OSU asked for truck volume growth rates for years 2017-2020 to use for a study looking at crash rates along the I-5 corridor from Salem to the Columbia River and I-205.
- Analysis Approach: Growth rates along I-5 had already been developed for a previous SWIM sensitivity testing.
- Outcome: Growth rates were provided.
- Purpose: ODOT's Transit Section was trying to understand the percentage of through trips versus “local” on given high use corridors around the state. Seven major corridors across the state (between major urban areas) were analyzed, to better understand the potential for new or improved transit service.
- Analysis Approach: A new method developed in analyzing SWIM was used, where specific trips are tagged with the specific sections of highway that they traverse over. This allows through trips (trips that pass by two end gates) to be easily tagged from the full trip table and then compared to the overall trips using a given corridor, allowing for a through trip percentage to be easily provided.
- Outcome: Trip information along the seven corridors, include through trip statistics, were provided to the Transit Section as further information in their analysis.
- Purpose: Throughout 2017/2018 ODOT put significant time and resources into better understanding and submitting a proposal to FHWA on a potential congestion pricing solution along I-5 and I-205 in Portland, Oregon (as required in HB 2017). SWIM played a major role by providing a number of important pieces of information throughout the work.
- Analysis Approach: SWIM was used to provide a variety of different pieces of fundamental information; potential of regional re-routing issues, potential impact to Portland's and Oregon's overall economy, impact to trip length for vehicles using I-205 and I-5, impact to overall VMT and travel trends for the Portland region and beyond, and toll amount sensitivity testing. Each of these data summaries was a significant effort and each individually represent the level of work (or greater) requested in a normal application. The point being that the analysis for this project was significant, but also developed many new tools and ways to dig into SWIM than had been available previously.
- Outcome: Although the information from SWIM was not heavily used in the final results and reporting (Portland-Metro's modeling tools were the main source of the final information reported), the significant amount of initial modeling from SWIM helped lay a significant foundation of understanding on how potential congestion tolls would impact the Portland Metro region, as well as Oregon as a whole. This information helped shape and guide the Value Pricing work throughout the project and helped to lay the foundation for future regional study of tolling.
- Purpose: Oregon Region 4 needed commodity flow info in support of a grant proposal. Region 4 staff learned at a meeting in DC that the grant proposal requirements changed at the last minute - requiring agencies to report the flow of agricultural products across the highway using grant monies. This request had a 24 hour turn-around-time.
- Analysis Approach: In order to expedite the request, the data was pulled from a previous request for commodity flow data for the Bend MPO and factored up to represent current flows.
- Outcome: SWIM provided the data necessary to submit the grant proposal within the 24 hour turn around time.
- Purpose: Related to the I-5 Aurora-Donald Interchange (Exit 278) work below, trends along Ehlen road were additionally desired to help inform that analysis.
- Analysis Approach: SWIM growth trends for several SWIM scenarios were pulled and plotted.
- Outcome: The SWIM growth trends were utilized (along with engineering judgment and project context) to better estimate auto and truck traffic patterns along Ehlen Road for the I-5 Aurora-Donald Interchange for future analysis years.
Future Growth Rate Projections for Highway Segments not Covered by an Urban Travel Demand Model (2018)
- Purpose: ODOT's RICS Unit (Roadway Inventory and Classification Services) is responsible for reporting current and future projected counts and VMT estimates. RICS utilizes travel demand models to better estimate (project) future volumes / VMTs. For roadway segments not covered by a travel demand model, the methodology had room for improvement. TPAU was asked to provide county and city VMT growth estimates that could be used to project future traffic volumes for areas not covered by local travel demand models.
- Analysis Approach: SWIM growth trends were tabulated by area and aggregated to city and county totals (for model links, roadways outside of areas with local travel demand models). These summarized VMT growth rates by county and city were provided to the RICS unit.
- Outcome: The RICS unit gained another source of information to add to the methodology for projecting (growing) existing traffic volumes / VMT to future years for FHWA reporting.
- Purpose: ODOT Region 2 was conducting operational analysis along OR 22 in West Salem, and had collected traffic counts along the corridor. MWVCOG had been contacted for OR 22 growth information in West Salem, however the OR 51 intersection is on the outer boundaries of their Salem-Keizer Travel Demand Model. It was decided to pull growth data from SWIM to help add additional information to the analysis on how the traffic around the OR 51 intersection might grow and change into the future.
- Analysis Approach: SWIM growth trends for several SWIM scenarios were pulled and plotted.
- Outcome: The SWIM growth trends were utilized (along with engineering judgment and project context) to better understand the future growth patterns at the OR 51 intersection.
- Purpose: SWIM has been configured to provide local area models with flows in and out of those local area boundaries.
- Analysis Approach: The trip tables (vehicle flows) from SWIM are cut down to a subset of just the trips interacting with a give sub area.
- Outcome: In 2017 SWIM helped provide this information for; the Bend-Redmond Area, Pendleton, Roseburg, and the Southern Oregon Model model areas.
- Purpose: This latest version of SWIM (SWIM 2.5) was showcased throughout 2017 to show it's new functionality and improved results.
- Analysis Approach: Several interesting examples of how SWIM could be used were run and presented to various groups. These included tests like; identifying who the likely users of new infrastructure would be, understanding how drivers might change travel patterns under hypothetical toll scenarios, understanding how freight shipment patterns might change under future congestion scenarios with and without given projects and large scale highway speed changes, and looking at different ways to estimate GHG production from transportation within given regions in Oregon.
- Outcome: Throughout 2017 these results were shared with a variety of stakeholders and customers, which better explained how SWIM could help provide information to a variety of questions, and ultimately increased the utilization of SWIM.
- Purpose: Following the Eagle Creek Fire of the summer of 2017, ODOT was interested in the economic impact to re-routed traffic due to the road closures along I-84 from the fire. SWIM was used to analyze the out-of-direction travel impacts for the traffic along I-84 in the section impacted by the fire closures.
- Analysis Approach: Truck and auto volumes, along with value and ton totals were tabulated for given locations where Eagle Creek Fire closed I-84. SWIM was used to identify the travelers using this section of I-84 and then map their reroute and tabulate the impact from the perspective of miles and hours traveled out of direction.
- Outcome: A report summarizing the economic impacts of the I-84 closure was developed and provided to the State Economist Mark McMullen.
- Purpose: The area around Pine St. in Rouge River, Oregon was being considered for improvement. There was no travel model for the area, so a zonal cumulative analysis was employed. To help in that process, SWIM data was requested to refine the approach / information.
- Analysis Approach: SWIM growth trends and trip production information for the Rouge River area were provided.
- Outcome: The SWIM information provided helped improved the zonal cumulative analysis work and the overall Rouge River analysis.
- Purpose: After a fatal work zone crash along I-5 North of Woodburn, ODOT wanted to understand the impact to the traveling public if they closed two of the three I-5 lanes to better protect the work zone. SWIM was the only model available that covered the project area (work zone influence area)
- Analysis Approach: Lane were closed in SWIM to determine how many vehicles might need to be re-routed / detoured around the 2 lane closure.
- Outcome: SWIM provided truck and person vehicle volume shifts on to the potential detour routes given a 2-lane closure on I-5. ODOT Region 2 used these trends (data) to better inform their discussion around how to properly design the I-5 work zone.
- Purpose: The I-5 Aurora-Donald Interchange (Exit 278) has been consider for improvement. Historic traffic count data was obtained for the interchange, but beyond historic trends, no other information was available for how the auto and truck traffic might go in the future for that interchange. It was decided to pull growth data from SWIM to help add additional information to the analysis on how the traffic around that interchange might grow and change into the future.
- Analysis Approach: SWIM growth trends for several SWIM scenarios were pulled and plotted.
- Outcome: The SWIM growth trends were utilized (along with engineering judgment and project context) to better estimate auto and truck traffic patterns at the I-5 Aurora-Donald Interchange for future analysis years.
Project Research Report - SPR 786
- Purpose: Following on the commodity flow work conducted previously (see below). Freight flows were asked for several Oregon highways connecting I-5 to the coast. The purpose was to help provide benefit (savings) information to the cost side of preventative landslide maintenance and related projects.
- Analysis Approach: Truck volumes, along with value and ton totals were tabulated for given locations where landslide maintenance was being considered. Further this identified truck traffic was re-routed under a potential landslide scenario and impacts to VHT and VMT given the detour were provided.
- Outcome: The information provided by SWIM helped push the research being conducted from an interesting exercise to a process / methodology with quantifiable information that has gained traction in the agency and is continuing to be used.
Provided crucial information in the discussion and passing of the Transportation Package "Keep Oregon Moving" (HB 2017).
- Purpose: prepare high level strategic comparison between current ODOT forecast budget and three alternative budgets designed to preserve and maintain conditions of state highways, roads and bridges.
- Analysis Approach: Use SWIM to estimate economic losses associated with deteriorating highways and bridges associated with different levels of investment.
- Outcome: Deteriorating highways and bridges place Oregon at a competitive disadvantage, with potential to lose of up to 120,000 jobs and $605 billion in gross state product; and raise household and business expenditures for vehicle operating costs from $300M to $450M per year.
- Purpose: As commodity flow analysis was being successfully prepared and delivered for the bottleneck work, additional requests were made for areas and other projects outside of the formal report. Sections of US 97 and US 20 in the Bend area were provided for Region 4 projects during the time that the bottlenecks analysis was being conducted.
- Analysis Approach: A subset of the Bottleneck work, described below.
- Outcome: Commodity flow data was provided for the Bend area, further improving the understanding and analysis of highway plans along US 97 and US 20.
- Purpose: ODOT was conducting work to help identify the most critical freight bottlenecks along Oregon's highways. Commodity flow data provided by SWIM ended up being a highly valuable input to that work.
- Analysis Approach: Ton and value flows were mapped and provided across Oregon's highways in seven commodity categories (as were used in the Freight Plan Analysis).
- Outcome: Throughout the Bottleneck project a vareity of SWIM link and matrix level information was provided. The end bottleneck report is helping ODOT further plan and prioritize future work and highway design.
- Purpose: Caltrans reached out to ODOT looking for truck flow information for US 101 north of Eureka to understand how a long term US 101 landslide closure might impact the Northern California coastal communities.
- Analysis Approach: Select link analysis with a detailed review of truck flows was conducted.
- Outcome: Caltrans was supplied with truck and commodity flow information for US 101 that was not available from any other source.
- Purpose: ODOT Region 2 was looking for additional analysis and information on potential impacts to Wilsonville Road given different potential configurations of the Newberg Bypass.
- Analysis Approach: SWIM was used to test a variety of different Bypass configurations.
- Outcome: The analysis helped to reinforce the findings from previous work. Changes in volume to Wilsonvile road will found to closely align with project work that was conducted throughout the course of the Newberg Bypass project / analysis.
- Purpose: ODOT-Region 2 was attempting to determine how best to handle a bridge repair along US 20 at Sheep Creek.
- Analysis Approach: SWIM was used to calculate local, regional, and statewide impacts under the scenario where this bridge along US 20 would be closed. Both SWIM and HERS were utilized in this analysis
- Outcome: The analysis determined that there would be an economic impact to the state of approximately $2M dollars during the duration of the closure. The largest share of the impact was in the area of Sweet Home. ODOT used this information in their benefit cost analysis of how to best scope and plan for the bridge repair.
Project Report
Project Memorandum
- Purpose: prepare high level strategic comparison between current ODOT forecast budget and an alternative budget designed to preserve and maintain current conditions of state highways, roads and bridges.
- Analysis Approach: Use SWIM to estimate economic losses associated with deteriorating highways and bridges.
- Outcome: Deteriorating highways and bridges place Oregon at a competitive disadvantage, with potential to lose 100,000 jobs and $94 billion in gross state product; and significantly raising vehicle operating costs for light and heavy vehicles.
- Purpose: Estimate the economic benefits associated with a bridge seismic reinforcement investment program, revised from the original March 2013 study .
- Analysis Approach: Use SWIM to estimate the avoided economic losses associated with investment made before a major seismic event occurs.
- Outcome: Analysis resulted in a return of investment calculation indicating the investment represents high rates of return.
- Purpose: ODOT investigated what the economic impact would be if a section of US 101 (north of Manzantia, Oregon) failed and could not be rebuilt for several years.
- Analysis Approach: This question was related to the seismic work that was originally completed, and therefore a similar method was used to close the section of US 101, and determine the local and overall economic impacts.
- Outcome: This section of US 101 is not as heavily traveled as other sections. Additionally, a relatively close highway (53) provides an alternative route. So the analysis found that the overall impacts we minor, however, there is a sub-region focus area in the vicinity of the closure that would be affected.
Oregon Passenger Rail - Including the Report
- Purpose: ODOT has been considering passenger rail options focusing on Eugene to Portland, including alternative analysis which SWIM provided some information for.
- Analysis Approach: The overall project analysis was much larger than the SWIM aspect, but SWIM was utilized to provide estimates of potential demand and potential growth into the future along the rail corridor.
- Outcome: Demand data from SWIM was provided to help inform this important Oregon study / report.
- Purpose: Develop a systematic data-driven approach to reporting corridor performance.
- Analysis Approach: Use two statewide analysis tools, HERS and SWIM, to create an automated reporting method that supports efficient and regular updates.
- Outcome: Methodology using the data was produced and tested for 19 corridors across the state. This is a sound approach and work will continue to implement this reporting method.
- Purpose: The Port of Portland was conducting a study and was interested in county to county flows by route across the state.
- Analysis Approach: Work related to the freight performance metrics (above) was underway, and the county to county commodity flows that were being requested were easy to summarize under that on-going work.
- Outcome: County-to-County flows by route (where all the routes summed to 100% for each county to county flow) were provided to Cambridge Systematics for use in their Port of Portland Study.
- Purpose: ODOT-Region 3 needed to close several miles of one of the lanes of I-5 within a 2 lane section of I-5 near Cottage Grove, OR. A request was made to determine what routes might be used as re-routes (specifically for long distance frieght) and how many travelers might be able to avoid I-5 given advanced warning (specifically to US 97 in California.
- Analysis Approach: SWIM was used to get an approximation for how many travelers (trucks mainly) might be able to shift to US 97 if given advanced warning.
- Outcome: The analysis provided that somewhere between 5-10% of I-5 traffic would likely be able to shift to US 97 avoiding I-5, if given the proper notice.
- Purpose: Estimate the economic benefits associated with a bridge seismic reinforcement investment program aimed at implementing the findings of the Seismic Lifelines Study.
- Analysis Approach: Use SWIM to estimate the avoided economic losses associated with investment made before a major seismic event occurs.
- Outcome: Analysis resulted in a return of investment calculation indicating the investment represents a high rate of return.
- Purpose: Gain an understanding of the land-use and transportation implications for freight movement under different economic conditions
- Analysis Approach: SWIM2 was used to forecast three potential economic futures
- Outcome: Analysis demonstrated that regardless of the economic forecast, Oregon needs to accommodate significant freight flows and economic activity in the future. Strategies to support freight movement are needed whether economic growth is low or high.
Winner of 2008 FHWA/FTA Transportation Planning Excellence Award - Modeling
- Purpose: Support goals and objectives of OTP
- Analysis Approach: Use SWIM to evaluate alternative scenarios to evaluate magnitude and direction of different policy options
- Outcome: Strategies for Agency policy and planning
Winner of 2003 ODOT Excellence Award
- Purpose: Prepare a report for the Oregon Transportation Commission evaluating how to stage bridge investments over time in a manner that minimizes negative impact on the Oregon economy.
- Analysis Approach: Use the SWIM to evaluate the economic impacts of bridge weight restrictions over time.
- Outcome: Recommended ten year investment plan implemented through 5 stages designed to maximize economic benefits while minimizing construction costs.
Major element in agency legal defense proceedings.
- Purpose: Assess potential land-us, transportation and economic impacts of constructing a bypass
- Analysis Approach: prepared and evaluated two SWIM scenarios with and without a new bypass around the Newberg/Dundee area
- Outcome: There is no difference in growth rates for population or employment between the two scenarios for the Newberg/Dundee area. Additional growth occurs in the McMinnville area for both population and employment. This is due to the increased accessibility of McMinnville to the Portland areas created by the new bypass.
Willamette Valley Forum: Modeling Analysis of Willamette Valley Transportation and Land Use Alternatives (2001)
- Purpose: Use newly available state-of-the-art SWIM to provide analysis to support a long range comprehensive study on land-use and transportation
- Analysis Approach: Use SWIM to evaluate alternative scenarios to evaluate magnitude and direction of different policy options.
- Outcome: Eight transportation and land-use scenarios were evaluated and provided a broad ranges of options used to reveal trans-offs and synergies between different policy choices. Legislature requested no further action related to this proposal.
- Purpose: Evaluate effects on statewide economy and transportation system of a new North-south freeway through central Oregon, as directed by 1999 Legislature (HB 3090).
- Analysis Approach: Using the SWIM, evaluate and compare results of three different highway alignments connecting existing freeways between Washington and California.
- Outcome: The objective of transferring growth from the Willamette Valley to Central or Eastern Oregon would not be met by building a new freeway east of the Cascades.
SWIM-TLUMIP Model User Guide, version 2.5
- SI - SWIM Inputs
- NED - New Economic Demographics
- ALD - Aggregate Land Development
- AA - Activity Allocation
- POPSIMSPG - PopulationSim Synthetic Population Generator
- PT - Person Transport
- CT - Commercial Transport
- TA - Traffic Assignment
- TR - Transit Assignment
- SL - Select Link
- SWIM VIZ - Reporting DB