Communications - Scientific Letters of the University of Zilina 2023, 25(1):F1-F14 | DOI: 10.26552/com.C.2023.013

Reckoning Level of Risk and Severity (LORS) Based on the Gap Acceptance at a Three-Legged Uncontrolled Intersection of a Rural Highway

Khushbu Bhatt ORCID...*, Jiten Shah ORCID...
Institute of Infrastructure, Technology, Research and Management, Ahmedabad, Gujarat, India

Traffic safety assessment is an essential part of traffic planning and engineering. At uncontrolled intersections, the severity of crashes has increased manifolds. This is due to the fact of not following the priority rule during the right-turning movements. In conventional methods, past accident records were used to analyze traffic safety. However, the drawbacks of the traditional method to estimate the severity require a lot of accident data for analysis to draw any conclusion and suggest safety measures. The accuracy of the record of accidents and details is highly uncertain. Therefore, surrogate safety measures are being used to analyze the safety. In the present paper, the gap acceptance time (GT) is used to examine the risk and the speed and gap values define the level of risk and severity (LORS). Moreover, using the value of the critical gap, the probability of risk is estimated. Further, the level of risk and severity is computed based on the gap and speed data of vehicles at an uncontrolled intersection. Hence, with the speed and gap data, the level of risk and severity is classified as low risk, high risk and low severe, and high severe. The methodology implemented is validated by using the actual accident data.

Keywords: gap acceptance, severity, safety, probability of risk, uncontrolled intersection, conflicting speed
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The authors received no financial support for the research, authorship and/or publication of this article.

Conflicts of interest:


The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Received: September 1, 2022; Accepted: November 24, 2022; Prepublished online: December 14, 2022; Published: January 25, 2023  Show citation

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Bhatt, K., & Shah, J. (2023). Reckoning Level of Risk and Severity (LORS) Based on the Gap Acceptance at a Three-Legged Uncontrolled Intersection of a Rural Highway. Communications - Scientific Letters of the University of Zilina, 25(1), F1-14. doi: 10.26552/com.C.2023.013
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