Transportation - Travel Demand Modeling
Travel Demand Modeling
A
travel demand model includes elements such as roadway and transit
networks, and population and employment data to calculate the
expected demand for transportation facilities. Within the model,
mathematical equations are used to represent each individual's
decision-making process of: "Why", "When", "Where", and "How" to
make the trip, and " What" route to follow to complete the trip. The
model results for these individual choices are combined so that the
aggregate impacts of roadway vehicle volumes and transit route
ridership on the average travel times can be determined.
Example of the Mode Choice Model:
Travel Demand Model Enhancement Request for Proposals
(02/26/2010)
Example of the Mode Choice Model:
2010 Travel Demand Model Enhancement Project
Historically, the travel demand model (TDM) has been used primarily
to determine air quality conformity and forecast future vehicle
trips. The model enhancement integrates bicycle, pedestrian and
transit trip types and updated local road conditions such as traffic
calming, posted speed limits and other operational elements.
The resulting model helps to better identify how mode-choices vary throughout
Missoula ,
aid the MPO with prioritization and selection of transportation
related projects
during the long range planning process
and provides the ability to assess impacts due to
facility installation and commercial/residential development on the
transportation system.
The resulting model helps to better identify how mode-choices vary throughout
