9.2 ParkingInfrastructure
** PLEASE CHECK MID-TERM PARKING IMPLEMENTATION. THIS DRAFT IMPLEMENTATION IS NOT YET IN THE CODE. **
Several types of relevant parking infrastructure were identified:
- On-street parking infrastructure:
- PCU parking
- Freight bay
- Bus bay
- Taxi stand
- Double parking
- Off-street parking infrastructure:
- Lot (Parking lot inside and outside buildings for freight and passenger vehicles)
- Bus terminal Further details about their differences will be provided in the technical specifications documentation.
The network in SimMobility is composed by a road network layer, a pedestrian network layer and a public transportation layer. The road network layer is composed by Nodes, Links, with Segments, Polylines, and Lanes. Connectivity attributes is assured by Lane Connectors, Turning Groups, Turning Paths, Conflict Points. In addition to these lists, we define slots to represent parking slot for Parking Infrastructure.
- Nodes are the end points of links.
- Sink node: Incoming section
- Source node: Outgoing section
- Intersection node
- Merging/diverging node
- Parking slot (New feature):
- Slot: Individual parking space (Slot), defined by a rectangular shape to represent the place where the vehicle parks.
- Hub: Set of slots, subject to parking capacity constraint, representing off-street parking
- Links are contiguous stretches of single directional roads. Segments are sub-divisions of a link. These are typically based on changes in the link geometry, such as change in the number of lanes. In addition to the Segments, we define an additional class inside Segments
- sSegment (New feature): Segment that include Slot(s)
- On-street parking infrastructure: On-street parking space; Bus bay
- hSegment (New feature): Segment that include a Hub
- Off-street parking infrastructure: Parking lot; Bus terminal
- prev-pSegment: Segment located before the parking segments (sSegment or hSegment)
- Vehicle may want to wait to park if “Waiting” mode within prev-pSegment or sSegment if possible (further described below)
- sSegment (New feature): Segment that include Slot(s)
Keep in mind the following terminology to understand this section:
- Lanes are a part of segments that are designated for use by a single line of vehicles
- Connectors connect lanes of two consecutive segments within the same link.
- Turning path is a path connecting specific lanes of two connected links.
- Turning group is a set of all turning paths that connect the same pair of links
- Turning conflicts are overlapping points of two turning paths that have the same traffic phases.
- Poly-line is a sequence of points defining the shape of road network constructs such as segments, lanes, links and turning paths.
The figure below represents the on-street parking infrastructure using some of network elements listed above. The figure below represents the on-street parking infrastructure. This representation can be generalizable across all on-street parking locations previously listed. After an adjacent intersection (or segment), there is bSegment. The slots are located in sSegment. A slot is designed with specific size, having length and width per assumed values (i.e., actual regulation).
Infrastructure representation of off-street parking infrastructure
A slot is designed with specific size. We must also assign a vehicle length for each vehicle type. The vehicle can park if vehicle length satisfies the size of an individual slot or of contiguous slots. In this parking type, vehicles can access/egress at slot 1 + x if slot 1 is occupied.
The figure below represents the off-street infrastructure. This representation can be generalizable across all on-street parking locations previously listed. This off-street parking representation composed by a hSegment. The hub is a set of slots (thus capacity based) that can store vehicles during their dwell time. Note that the shape of the hub is meaningless, only the access and egress points (Acc./Egr. point) are relevant and should be represented in adequate locations, like that of the real or envisioned infrastructure.
Infrastructure representation of off-street parking infrastructure