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Andrew Rohne edited this page Dec 14, 2021 · 2 revisions

Metropolitan Council Model Run (Part 2): ActivitySim

ActivitySim works by simulating the long and short term choices of a population. ActivitySim is provided with the skim data from the supply-side model, which tells ActivitySim the times, distances, tolls, fares, number of transfers, etc. for each of the ways one can travel. ActivitySim is also provided with a synthetic population and household dataset, which forms the individuals simulated in the model.

The simulations can be long-term choices, which are choices that do not change very often, such as one's workplace or school location, or choices that are linked to these models, such as if an individual is likely to receive free parking. Short term choices are those that change more often, such as if a person will undertake one or more mandatory tours (such as work or school), one or more non-mandatory tours (such as shopping or eating out) or if a person will stay home. Additional models determine tours - groups of trips starting and ending at a person's home - and trips - the individual stops. A tour can have two or more trips, which may be as simple as going to work and back home, or as complex as making several stops on their way to and from work.

ActivitySim is an open source model platform that uses the council's synthesized population and households and simulates choices made by the model users. These choices include long-term choices, which are the school location, workplace location, work from home, auto ownership, free parking and telecommute frequency. Finally, the model simulates daily choices, which include modeling the tours and trips people undergo throughout their day.

The input data for the model includes zonal data, synthesized household data, synthesized population data, and transportation network data.

Long term models are models of things that do not change easily or often. This includes school locations, work locations, work from home, auto ownership, free parking, and telecommute frequency. These choices

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