Information about the travel forecasting package, Quick Response System II
If you are reading this article you probably know something about equilibrium traffic assignment and how it is done in at least one travel forecasting package. Traditional methods of equilibrium traffic assignment, say Frank-Wolfe decomposition and MSA (method of successive averages) found in wide use around the world, converge to an equilibrium solution rather slowly. …
NCHRP Report 765 lays out guidelines for project-level travel forecasting. I was privileged to have served as the technical lead on this report; many people contributed mightily to its success, including Rob Bostrom and his team from CDMSmith, Tom Creasy, Paul Herskowitz, Mei Chen, and Ram Pendyala. All of us brought to this report many …
There is an idea floating around the transportation planning community that drivers are sensitive to the variability in travel time when choosing their routes. This idea suggests that drivers will tend to avoid short routes where the travel times are unpredictable and may instead choose longer routes where the travel times are consistent from day …
Almost everyone today has a computer with more than 1 core. Those of us who run time-intensive applications, such as simulations, are frustrated in having to wait for results that should be gotten much sooner had all the cores been fully engaged on the task. Many of us have had the experience of looking at …