مهندسی عمران-راه و ترابری
Hadi Shahsavari; Reza Amin; Ali Khodaii
Abstract
Providing road safety is an important social need. Ensuring road safety is one of the most rooted foundations in traffic engineering and transportation planning. Safety guards are one of the most common safety systems on the road. One of the most common road safety methods is using guardrails in the ...
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Providing road safety is an important social need. Ensuring road safety is one of the most rooted foundations in traffic engineering and transportation planning. Safety guards are one of the most common safety systems on the road. One of the most common road safety methods is using guardrails in the middle of intercity routes. In recent years, intermediate concrete separators (New Jerseys) gradually replaced guardrails. In recent years, intermediate concrete separators (New Jerseys) gradually replaced guardrails. This research aims to investigate the safety performance of two types of guards (Dividers) guardrail and New Jersey on the freeway of Qazvin-Zanjan. The replacement of guardrails with concrete barriers (New Jersey) in the toll section of Tehran Qazvin to Ziaabad range has been ongoing for a length of 68 km since the end of 2018 and the end of 2020. The study found that New Jersey's installation reduced head-on crashes by more than 96 percent. It has also had a significant impact on reducing the number of accidents. However, the study of accident statistics will accurately explain the effectiveness of New Jersey in reducing accidents. However, the decrease in the frequency of accidents in axles with concrete protection may be due to the sense of security that drivers experience while driving on axles equipped with New Jersey. This issue was raised in several previous studies
