Enhanced models that account for traveler behavior to inform better decisions about highway capacity needs.
Integrated Travel Demand Modeling (C10)
In transportation planning, assignment of trips from a travel demand model to a network has been a one-way process. There has been no feedback from a congested network to traveler decisions on departure time or route as there is in real life.
SHRP2 has developed this linkage to better reflect behavior in the models so planners can more directly test the effects of various alternatives on congestion. For the first time, transportation agencies will be able to estimate travel demand in a way that integrates activities, networks, and the environment. These advanced models are sensitive to the reciprocal interplay of traveler behavior and transportation network conditions, including mode choice options. The models support more informed decisions about adding highway and transit capacity, enhancing traffic operations, introducing priced roads, and improving traveler information. A shortcut tool for assessing smart growth on congestion is also available.
In the Field
Field activities also performed in California and Florida during the research phase.