| Autor: |
Rankavat, Shalini, Garg, Akanksha |
| Předmět: |
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| Zdroj: |
Journal of Transportation Engineering. Part A. Systems; Sep2024, Vol. 150 Issue 9, p1-8, 8p |
| Abstrakt: |
Road safety on horizontal curves has become a great concern due to issues related to the number of road crashes where collisions result in twice as many fatalities as on a straight segment of road. This study is an attempt to improve safety at horizontal curves. The analysis methodology consists of two parts: first, using ArcGIS software, horizontal curves with a right of way of 30, 45, and 60 m and clustering of fatal crashes were identified. The next step used a reliability theory to account for how safe the existing curve is and what the probability of failure or noncompliance will be. Analysis of the traffic crashes over the Delhi map shows that 34 curves are at high risk based on the density of crashes at curves and required road geometry parameters. It was found that, as the curve length increases, the reliability index based on stopping sight distance increases. The reliability index based on radius and superelevation increases with the radius of the curve. The increase in curve length has a much higher effect on safety performance than the curve radius in an urban area. This research will not only help in determining the unsafe curves present but also in taking appropriate measures to lower crash rates. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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