URBAN PUBLIC TRANSIT SYSTEMS MODELING CAPABILITIES

This research study focused on the capabilities necessary to model urban public transit systems. A comparative evaluation of traffic simulation models was conducted based upon the review of previous research and literature. Actual model testing relative to transit and HOV systems was limited to the CORFLO model. The study identified feasible enhancements to the transit-related modeling capabilities of CORFLO. However, revising the CORFLO model to incorporate these enhancements was beyond the scope of the study. Recommended enhancements include increasing the number of bus stops that can be accommodated, refining the modeling of bus movements along links, and adding or improving fuel consumption and emissions algorithms. These enhancements are necessary in order to estimate with reasonable accuracy the fuel consumption, traffic, and environmental impacts of common transit and HOV alternatives.