Input–Output and Hybrid Techniques for Real-Time Prediction of Delay and Maximum Queue Length at Signalized Intersections

Abstract

Vehicle delay and queue length are quantitative measures of intersection performance. The technological advancement in the field of vehicle sensors and traffic controllers has reached a point where it has enabled efficient measurement of these performance measures. Two techniques are presented for real-time measurement of vehicle delay and queue length at a signalized intersection, and these automated delay and queue estimates are compared with manually ground-truthed measurement. These techniques were evaluated at an instrumented intersection in Noblesville, Indiana. The root-mean-square error by both techniques was below 0.7 veh-s for estimation of average delay and less than 0.15 vehicle for estimation of average maximum queue length, both on a cycle-by-cycle basis.

Bluetooth as a traffic sensor for stream travel time estimation under Bogazici Bosporus conditions in Turkey

“…Models have been proposed to estimate travel time (or speeds) [6,7,[8][9][10][11] and density [12][13][14] from loop detector data.…”

Analyzing of the Delay Model Using the Mobile Facility Vehicle Data at the Signalized Intersection

“…They set two virtual detectors on the video and supposed that the vehicles between the two virtual detectors obey the rule of first-in-first-out, and then match the vehicles information, so every vehicle's travel time was recorded. Using the recorded travel time of the vehicle minus the travel time the vehicle spent using free speed, every vehicles delay was calculated (8). Jianyang Zheng et al have used the probability method to get the approach delay through setting two virtual detectors (9).…”

Performance Measures for Traffic Signal Systems: An Outcome-Oriented Approach

“…At locations where the arrival profiles can be directly measured, it is possible to analyze the delay by calculating the area between the arrival and departure curves (53). This is done by directly considering the cumulative arrivals and departures over time based on vehicle detections and phase status.…”