Fall 2012 Seminars

Jing Li, Ph.D. UF Civil Engineering

Title:  Two-Lane Highway Simulation and Analysis

Abstract:  Rural areas transitioning into a more developed area is attracting more attention than before, particularly in Florida, as the congestions arise on facilities that did not have any before due to rapid growth and development. Two-lane highways that serve as the accesses to these areas are becoming a concern, especially the ones that are mixed with occasional signals. Appropriate analysis tools are very important for researchers to evaluate the operations on complex two-lane highways. However, the current two-lane highway simulation tools are not capable of modeling signalized intersections within a two-lane highway facility. Meanwhile, the two-lane highway analysis procedure in the current Highway Capacity Manual (HCM) does not account for interruptions to the flow, such as from signals. In our study, two-lane highway modeling capability was first incorporated into CORSIM by making the necessary additions and modifications to the existing CORSIM software code base. Then, based on the new modeling capability, an analytical methodology for analyzing two-lane highway facilities with various features was developed based upon the previous study done by Yu and Washburn (2009). With this study done, a two-lane highway facility combined with signalized intersections can then be evaluated based on the aggregate service measure over different types of segments.