The effects of climate factors on road accidents of Rasht to Anzali

One of the most important factors of road accidents is unfavourable climate. factors such as temperature, snow and rainfall, relative humidity, fog, storm, feezing- weather, Etc,are highly influential on road accidents. In this study, by considering recent climate factors,we tried to study and analyse Rasht to Anzali road accident. At first, with regard to aerological figures, we analy sed climate parameters and then by using accident figures in the mentioned road, accidents due to climate factors were investingated. we concluded that in 1385, 1384, and 1381,we had the most accidents in this road when the weather was clear, cloudy, and raing in these years. respectively. In 1385, the accidents were due to unfavourable atmosphericconditions. there fore, there is a relationship between theseaccidents and climate factors. The mostaccidents in rainy days also happened beween hours 14:00 to 18:00 p.m. during the years from 1376 to 1385 This study shows that on the main road, pooshesh factory,khomam Ringway, chaparkhaneh, and TalebAbad to Anzali, we had the most accidents. We had a 17 percent increase in accidents after having the Rasht to Anzali road two – banded. This increase was due to the large number of vehicles. The most accidents during sunny and clear weather belonged to the single- band road.