Prioritization Risk Model of Avalanche in Mountainous Roads Using Vehicle Collision Possibility Factor

Document Type : Original Article

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Abstract

Avalanches are of highly probable natural disasters on mountain roads during cold seasons. This natural phenomenon is also a usual reason of road closures and casualties in Iran especially in roads between Tehran and northern cities and western and north-western roads. In order to preventing or reducing avalanche incidents, first, more risky points should be identified and next, suitable safety actions must be considered. Previous studies mainly use regional and geological data based on field inspections, whereas, several other parameters are considered in this study and a combined model is developed. The parameters are snow depth, side slope, vegetation, avalanche frequency, vehicle collision possibility, daily traffic count, and expert interview. Ten avalanche-prone points are identified in Karaj-Chalous road and are prioritized using method of TOPSIS. The results show that avalanche frequency is the most effective factor. Moreover, the results show that sections of 62+000-63+000, 63+000-68+000, and 70+000-74+000 are the most risky ones and safety solutions should be considered in these points.
 
 
 
 

Keywords

References

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Journal of Transportation Research
Volume 13, Issue 4 - Serial Number 49
January 2017
Pages 180-192

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