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Presenting a Regression Model for the Impact of Road Geometric Factors on Road Safety (Case Study: Kandovan)
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Javad Ashoorian *   , Hasan Divandari |
| Islamic Azad University, Noshahr Branch |
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Abstract: (36 Views) |
Road safety is a major concern that has affected the social economy of countries. According to the statistics of the World Health Organization, approximately 1.25 million people die and 20-50 million people with serious injuries with long-term disability live every year due to road accidents worldwide. Road accidents are the ninth leading cause of death among young people and are expected to become the fifth by 2030. Most road accidents occur in developing countries, which cost 518 billion dollars worldwide annually. There are three main factors that are related to road accidents namely human related factors, vehicle related factors and road related factors. Meanwhile, suburban roads account for a large share of fatal and injury accidents. Studies show that more than 50% of accidents leading to death or injury happen in arches. Drivers' mistakes are usually the first cause of accidents. Sudden changes in the geometric components of the road cause the driver to worry while driving. One of the most important reasons for human errors is the inconsistency between the road conditions and the driver's expectations. A compatible design is a design that does not conflict with the driver's expectations. In other words, during the design of the route, the designer, in addition to considering all the design criteria, should also satisfy the expectations and desires of the driver. Arc radius, longitudinal and transverse slope, dewar, visibility distance in the arcs and roadside conditions have been analyzed. In the dynamic responses of lateral tire forces, which is based on the friction between the tire and the road pavement surface and the geometrical characteristics of the road, vehicle slippage is usually the criterion for safety estimation in geometrical design. The radius is one of the most important geometrical parameters of the horizontal arc, and according to Ashto's announcement in 2004, the minimum road radius is 492 meters at a speed of 100 km/h. After the horizontal paths, the transmission arches should be created, and its purpose is to open the curvature of the arches and provide the appropriate wall to improve safety and comfort, in addition, the proper classification of the roads to ensure the transmission of different speeds of the roads, It is necessary.
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| Keywords: Horizontal Arches, Geometric Design of the Road, Road Accidents, Road Safety, Kandavan. |
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Full-Text [PDF 854 kb]
(23 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2025/04/29 | Accepted: 2025/12/7 | Published: 2023/09/1
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