Prioritization of Countermeasures in Black Spots Based On HSM Method
Document Type : Original Article
Authors
1 M.Sc., Grad., Department of Civil Engineering, Payam Noor University (PNU), Tehran, Iran.
2 Professor, Faculty of Civil & Environmental Engineering, Tarbiat Modares University, Tehran, Iran.
10.22034/road.2023.118080
Abstract
In this research, researchers are looking to prioritize countermeasures in one of the important intersections of Darrehshahr city. The four countermeasures including installing a traffic signal, installing a speed hump in the minor approach, drawing a stop line in the minor approach +sign and creating a rumble stripe in the major and minor approach for this intersection are considered. The research method is the economic evaluation method in HSM. In the economic evaluation of countermeasures, the costs of fatal crashes, injuries and damages for the year 1399 have been calculated. Also, the expected crashes before and after the implementation of the countermeasures and the reduction in the frequency and severity of the crashes caused by the implementation of the countermeasures have been estimated. By calculating the annual benefits of crashes reduction and calculating the current value of benefits, assuming a 3 percent discount rate and a service life of 10 years for countermeasures, cost-benefit analysis and cost-effectiveness of countermeasures have been performed. The results show that according to the Benefit-Cost Ratio method, the stop line in the minor approach +sign, the creation of the rumble stripe in the major and minor approach, the installation of the speed hump in the minor approach and the installation of the traffic signal have priority, respectively. Also, for every million Rials spent on the implementation of the stop line in the minor approach +sign, the ratio of benefit to cost during the 10-year lifespan is 396508.5 to 1.
Keywords
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