Abstract
In this paper we present some of our research findings derived from a series of research activities funded by the California PATH program to commemorate the occasion of the establishment of the PATH program 20 years ago. The major theme woven by these research efforts is the development of more effective traffic management tools that help tame unbridled traffic congestion in California, and the major contributions include a better understanding of traveler behavior, improved methods for obtaining origin-destination demand matrices, and increased modeling and control capabilities