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Title:Comparison of stopped delay between field measurements and HCM 2010 estimations at actuated signalized intersections
Author(s):Shaik, Mohammed Abdul Rawoof
Department / Program:Civil & Environmental Eng
Discipline:Civil Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Field Data Collection
Data Reduction
Highway capacity manual (HCM)
Capacity Analysis
Delay Comparison
Actuated Signals
Abstract:The Highway Capacity Manual 2010 methodology of capacity analysis is widely used for performance evaluation of signalized intersections. However, very few studies have been performed to validate the HCM delay estimation model. This thesis aims to study the accuracy of the HCM 2010 delay estimation methodology for actuated signalized intersections using field data. The HCM stopped delay estimates were statistically compared with the field measurements for six signalized intersections along an actuated-coordinated corridor during four time periods of day, namely AM peak, off peak, noon peak, and PM peak. Overall, the HCM estimates were not significantly different from the field data only for 38.1% of the comparisons (32 cases out of 84). In the significant discrepancies, 74.2% of the HCM overestimations were on the minor streets (23 cases out of 31) and 95.2% of the underestimations were on the major street (20 cases out of 21). Hence, HCM significantly overestimated the delay on minor streets most of the time and significantly underestimated on major streets almost all the time. The over- and underestimation trend was verified for each intersection as well as each time period. In light of this trend, some insight is provided into the causes of observed discrepancies and recommendations are made for future studies.
Issue Date:2016-04-26
Rights Information:Copyright 2016 Mohammed Abdul Rawoof Shaik
Date Available in IDEALS:2016-07-07
Date Deposited:2016-05

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