Performance measures on two-lane highways: Survey of practice

Ahmed Al-Kaisy, Amirhossein Jafari, Scott Washburn, Tapio Lutinnen and Richard Dowling

Research in Transportation Economics, 2018, vol. 71, issue C, 61-67

Abstract: Two-lane highways constitute a significant component of the highway system and serve an essential function for the movement of people and goods. The Highway Capacity Manual is primarily used for operational analysis on two lane highways in the U.S. and Canada. As part of a project sponsored by the National Cooperative Highway Research Program for improving two-lane highway operational analysis methodology, a practice survey was conducted to gather information on agency experiences in regards to performance measurement on two-lane highways. The survey was sent to all state Departments of Transportation in the United States and Canada. A total of 35 usable responses were received, representing 25 states and 4 Canadian provinces. This paper summarizes the results of the agency survey and presents the most important findings. Results suggest that the top three criteria for good performance measures are: sensitivity to traffic conditions, sensitivity to road conditions, and relevance to road user perception. Further, agencies identified average travel speed as the most relevant traffic flow aspect to two-lane highway operations. Other performance measures that were found meritorious were volume-to-capacity ratio and flow rate, for class I and class II highways, respectively, versus the latter measures and percent-time-spent-following for class III highways.

Keywords: Two-lane highways; Operational analysis; Performance measures; Survey (search for similar items in EconPapers)
JEL-codes: R41 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.retrec.2018.07.001

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