Analysis and Modeling of Measured Delays at Isolated Signalized Intersections

摘要

Vehicular delay is an excellent for evaluating the operation of signalized intersections. This paper presents a methodology for measuring and analyzing stopped delay as well as acceleration and deceleration delay at a traffic signal. Field data were collected at 12 screen lines (or stations) defining a "system" where randomly selected vehicles are traced for about 35m. Crossing times collected at the screen lines were utilized to estimate vehicle speed, acceleration, and delay of selected vehicles. Results indicated that deceleration and acceleration lengths of "stopped" vehicles varied over a wide range, as did the deceleration and acceleration rates.