Delay to Frontage Road Vehicles at Intersections with Ramps

摘要

The report contains details of and results from investigations of the delay incurred by two-way frontage road traffic at intersections with freeway ramps. All of the studies were conducted where frontage road traffic yielded to the ramp traffic. Studies were conducted on both lanes of a two-way frontage road at an intersection with an exit ramp, and on a lane of a two-way frontage road opposing the traffic turning onto the entry ramp. One study was conducted at an exit ramp intersection with a two lane, one-way frontage road for contrast with the two-way situations. All of the studies were situated in medium-sized towns in Texas. The Poisson arrival process and queueing theory were utilized to derive predictive models of delay for the four study cases. These models predict delay as a function of ramp volume, frontage road volume, and gap acceptance parameters.