The purpose of this research was to address the shortcomings of the daily activity schedule model and introduce changes in the model system in order to more fully utilize the potential benefits of such a system. The major problem with the previously developed model was its full reliance on the...

Small and medium-sized communities often lack data that are complete, current, representative of the community, and appropriate for the travel demand models/software to be applied. To aid such communities, this research was conducted to meet the following objectives:(1) Identify and facilitate...

Procedures developed for the estimation of Vehicle-Miles of Travel (VMT) have been fraught with problems of inaccuracy. Emphasis on environmental issues (air quality), as mandated by current regulations (CAAA, ISTEA-91, and TEA 21), requires State DOTs to accurately estimate travel on their...

An origin-destination (O-D) table that accurately portrays a study area's travel patterns is a valuable element in the modeling and analysis used to support public transportation investment decisions. The probabilistic approach to O-D table estimation involves a heuristic enumeration of link...

The most well-known origin-destination estimation methods involve entropy maximization or information minimization. However, these methods often require much more information than is available in reliable form, namely, target trip tables and the extent to which each origin-destination path uses...