DOI

10.5703/1288284313244

Abstract

This research has sought to demonstrate potential benefits from deploying enhanced vehicle actuation strategies at isolated signalized intersections. The work has exploited microscopic, stochastic simulation to evaluate impacts of enhanced vehicle-actuated (VA) control schemes for an array of operating conditions. Simulated outcomes (i.e. average vehicle delays) generated under the enhanced strategies were compared with outcomes resulting from more “conventional VA control policies. Findings from this work suggest that substantial delay reduction generally occurs by exploiting VA strategies which seek to 1) facilitate the use of the clearance interval by discharging vehicles, 2) shorten the duration of the required clearance interval by only serving, to the extent possible, queued vehicles and 3) evaluate gaps in individual traffic streams. The enhanced VA strategies described and tested in this research are inconsistent with conventional practice. Nonetheless, legally entitled to enter the intersection are always allocated clearance interval of sufficient duration.

Report Number

FHWA/IN/JHRP-94/08

Keywords

traffic signal control, HPR-2070

SPR Number

2070

Project Number

C-36-17RR

File Number

8-4-44

Performing Organization

Joint Highway Research Project

Publisher Place

West Lafayette, IN

Date of this Version

1995

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