Combinatorial tour mode choice
In most Activity-Based Models (ABMs) in practice mode choice decisions are modeled in two steps. First the entire-tour mode combination is predicted based on the location of the primary destination of the tour (at this step the modeled tour is largely treated as a simple round trip). Secondly, a detailed trip mode is predicated conditionally upon the tour mode and given the specific origin and destination location for each trip. The mode choice model applied for the ABMs recently developed for the Maricopa Association of Governments (MAG) and Ohio state Department of Transportation (ODOT) has a different structure where the tour-level and trip-level choices are integrated in a network combinatorial representation. The model considers all feasible trip mode combinations on the tour (in a similar way how a path dependent shortest path is built in a transportation network) and the tour mode combination emerges as the joint choice of trip modes. This model formulation imposes a lot of additional constraints compared to the two-step structure and in particular, with respect to the conditional linkages between different trip mode choices within the tour. This structure explicitly tracks the car status at origin and destination of each trip and constraints multimodel combinations such as park and ride to consider a logical location of the parking lot. In terms of practical application, this approach suits some of the recent ABMs developed in practice where tour formation sub-model precedes tour mode choice in the model chain and eventually both models are equilibrated.
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Supplemental Notes:
- This paper was sponsored by TRB committee ADB40 Standing Committee on Transportation Demand Forecasting.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Vovsha, Peter
- Hicks, James E
- Vyas, Gaurav
- Livshits, Vladimir
- Jeon, Kyunghwi
- Anderson, Rebekah
- Giaimo, Gregory
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Conference:
- Transportation Research Board 96th Annual Meeting
- Location: Washington DC, United States
- Date: 2017-1-8 to 2017-1-12
- Date: 2017
Language
- English
Media Info
- Media Type: Digital/other
- Pagination: 17p
- Monograph Title: TRB 96th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Activity choices; Mode choice; Multimodal transportation; Origin and destination; Park and ride; Trip chaining
- Identifier Terms: Ohio Department of Transportation
- Subject Areas: Planning and Forecasting; Transportation (General);
Filing Info
- Accession Number: 01629547
- Record Type: Publication
- Report/Paper Numbers: 17-05951
- Files: PRP, TRIS, TRB, ATRI
- Created Date: Mar 20 2017 9:23AM