Comparison of Delays from HCM, Synchro, PASSER II, PASSER IV and CORSIM for an Urban Arterial

Benekohal, Rahim F.; El-Zohairy, Yoassry Mohammed; Saak, Joshua E.

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https://hdl.handle.net/2142/46347 Copy

Description

Title

Comparison of Delays from HCM, Synchro, PASSER II, PASSER IV and CORSIM for an Urban Arterial

Author(s)

• Benekohal, Rahim F.
• El-Zohairy, Yoassry Mohammed
• Saak, Joshua E.

Issue Date

2001-08

Keyword(s)

Intersection Delay, Delay Models, Highway Capacity Manual (HCM), HCS, Synchro, PASSER, CORSIM, Simulation Models, Urban Arterial

Abstract

This study compared control delays computed by HCM (using HCS software), Synchro, PASSER II, PASSER IV, and CORSIM for an urban arterial. Base and optimized conditions were studied. In the base condition, the existing signal settings and traffic volumes were modeled in HCS and Synchro under three scenarios: actuated-coordinated, actuated-uncoordinated and pre-timed traffic controller. For the base condition, delays from HCM shouldn’t be directly compared to Synchro unless the precautions discussed in this report are taken. For pre-timed and actuated signals when simultaneous phases exist and one terminates ahead of the others, the results of HCM and Synchro are not comparable. For pre-timed and actuated signals where the phases terminate simultaneously, the condition analyzed won’t be comparable unless the precautions are taken. Once these precautions were taken, control delays from Synchro and HCM were not significantly different for only pre-timed uncoordinated signals. For actuated uncoordinated and for actuated-coordinated, the software are modeling different conditions. For the optimized condition, the software optimized signal settings for actuated coordinated signal controllers and calculated the delays. The delays for optimized conditions from PASSER II and PASSER IV were not significantly different than the delays for the base conditions. However, the delays from Synchro for optimized conditions were significantly lower than the delays for the base conditions. CORSIM was used to verify whether the optimized signal settings would produce lower delay if implemented in the field. The results indicated that delays for optimized conditions would not be significantly lower than the delays for the base conditions, and the lower delays given by Synchro for the optimized conditions could not be verified.

Series/Report Name or Number

FHWA-IL/UI-TOL-1

ISSN

0917-9191

Type of Resource

text

Language

en

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http://hdl.handle.net/2142/46347

Sponsor(s)/Grant Number(s)

The Illinois Department of Transportation

Copyright and License Information

No restrictions. This document is available to the public through the National Technical Information Service, Springfield, Virginia 22161

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