WORKSHOP
168: INTEGRATING DEMAND & NETWORK TRAVEL MODELS
In
research and practice, there have been many advances on both travel demand and network
modeling, but there has been less attention to the integration of these
advanced models. Current integration techniques (i.e., loose coupling of these
models to transfer data from one to the other) do not take advantage of the
added behavioral data available in each model nor do they achieve consistency
among parameters that are used in both demand and network models. This workshop explored the various different levels of integration that are
possible for demand and network travel models: incorporating specific features
of demand modeling into network modeling, such as path-building parameters;
incorporating specific features of network modeling into demand side modeling,
such as value of time parameters for different market segments (i.e., truck
trips, work trips, by income group, etc.) into demand model components, such as
trip distribution and time of day; incorporating specific features of
activity-based simulation modeling in advanced travel simulation models, such
as dynamic traffic assignment, route choice or traffic microsimulation models,
and vice versa; and integrating demand and network travel models to take
advantage of behavioral details of each person and each vehicle developed in
the demand model for use in refining the network model (e.g., value of time for
each person could be used in assigning trips to toll roads in the traffic
operation or route choice model).
Topics
addressed in the workshop included
- What are the desirable properties of methods used to integrate demand and
network models?
- What is the best practice in this area?
- What is the state of the art?
- What are the most
promising directions for research?
Links to workshop presentations
are provided below.
SPONSORS
Transportation
Demand Forecasting Committee
Traveler Behavior and Values Committee
Transportation Network Modeling Committee
MODERATOR
Joan
Walker, Boston University
PANELISTS
Srinivas Peeta, Purdue
University
Maren
Outwater, Cambridge Systematics
Ken
Cervenka, NCTCOG
Rick
Donnelly, PB Consult
Rick
Dowling, Dowling Associates
KW
Axhausen, IVT Zurich
Chandra
Bhat, University of Texas, Austin
David
Boyce, Northwestern University
Hani Mahmassani, University
of Maryland
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