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Dynamic, Integrated Model System: Sacramento-Area Application. Volume 2: Network Report. The Second Strategic Highway Research Program.
| 题名： | Dynamic, Integrated Model System: Sacramento-Area Application. Volume 2: Network Report. The Second Strategic Highway Research Program. |
| 关键词： | Dynamic Urban System; Metropolian Areas; Traffic Accident Analysis; Transportation Planning; Travel Demand Modeling (tdm); Trip Based Approach |
| 摘要： | The second Strategic Highway Research Program (SHRP 2) Project C10B, Partnership to develop an Integrated, Advanced Travel Demand Model with Fine-Grained, Time-Sensitive Networks: Sacramento-Area Application, is an important step in the evolution of travel modeling from an aggregate, trip-based approach to a completely dynamic, disaggregate methodology. In this project,an existing disaggregate activity-based model (ABM) was integrated with an existing traffic simulation model to create a new, completely disaggregate model.This report describes the DynusT (Dynamic Urban Systems for Transportation) dynamic traffic assignment (DTA) model and the FAST-TrIPs (Flexible Assignment and Simulation Tool for Transit and Intermodal Passengers) DTA package and how these two model systems interact with each other and with the DaySim ABM implemented in Sacramento, California, to compose an integrated ABM and DTA model. This work was performed as part of the SHRP 2 Project C10B, Partnership to Develop an Integrated, Advanced Travel Demand Model with Fine-Grained, Time-Sensitive Networks. DynusT is a simulation-based DTA model capable of performing daily regional simulations of large metropolitan areas that involve many millions of trips, a feature necessary for DTAand ABM integration. This document describes in detail the traffic simulation and assignment capabilities of DynusT that capture capacity constraints, congestion, and queue propagation for various types of vehicles, including transit vehicles, and allow the generation of time-dependent level-of-service (LOS) measures that are closer to traffic theory. It also describes in detail the methodology that is used internally by DynusT to determine the time-dependent least-cost path route for each driver, a concept that is described as ???dynamic user equilibrium.??? FAST-TrIPs is a region wide DTA model that determines an individual-specific transit route for each transit traveler in the system, taking into account published tra |
| 报告类型： | 科技报告 |
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