The present study studies the effects of climate on road accidents in Qazvin-Rasht
road. Road accidents are one of the most important factors in property and life loss.
Important factors such as traffic safety, environmental variables and unfavorable
climatic conditions play role in this end. In this research, Rasht-Qazvin axis on long
of 170.81 km, which is one of the most important and at the same time hazardous
roads of Qazvin-Gilan provinces, has been studied as a map of Accident dispersal
and accident risk probability in each of the climatic condition (snowy, icy, rainy,
foggy and sunny). Accident data was used in the road layer during a 4-year
statistical period (2010-2013). Then, according to the frequency of accidents in
atmospheric conditions and the communication axis were determined. classification
and hazardous points . In rainy weather, the frequency of accidents was 16%, in
foggy weather, the frequency of accidental accidents was 11%, in the conditions of
airy weather, the frequency of accidents% 9% and in all atmospheric conditions, the
frequency of accidents was 493 and the Kohin-loshan axis has the maximum
frequency Accidents are among the most dangerous points in this regard In this end,
the severity of accidents and life loss in rainy&snowy days was observed using
accident probability maps as well as importance coefficient of each climatic
condition.