Capacity of TWSC Intersection with Multilane Approaches

This paper presents an improved model for assessing capacities of vehicular movements at Two-Way Stop-Controlled (TWSC) intersections. The theoretical model was derived based on the conflict technique for estimating capacities of vehicular movements at multilane TWSC intersections under non-saturated traffic conditions. The model parameters were calibrated by referencing the related research of field observations. The effectiveness and reliability of the proposed model were verified by comparing with the methodology of Highway Capacity Manual 2000 (HCM2000) and VISSIM simulation with various lane configurations and traffic demands. In comparison with the gap acceptance model recommended in HCM2000, the proposedmodel can simplify the process of estimating capacities of TWSC intersections and extend to be applied to any multilane TWSC intersections. © 2011 Published by Elsevier Ltd.