One of the major challenges in the cold seasons of the year is freezing of the urban roads due to snowfall.
Snowfall reduces the speed of vehicles and, then, causes traffic jams in urban roads. Traffic jams
influence the quality of life of residents, negatively and reduce the efficiency of the avenues. In order to
decrease traffic jams, operational plans must be developed at different levels, but the requirement for this
is to know the high-risk roads in terms of various environmental, physical and usage indicators. Due to its
topographical position, Municipality Region 1 of Tehran always encounters traffic challenges and traffic
jams caused by snowfall. Studies demonstrate that most of the knowledge of urban services in Region 1
has been experimental, and there has been no research on the condition of routes during snowfall. This
article is practical and aims to investigate the risks of urban roads in the Region 1 of Tehran. The
methodology of the research is descriptive, analytical and observational along with a questionnaire. At
first, the indicators affecting avenues during the snowfall are identified and expertly compared in pairs
according to the roads in Region 1 of Tehran. The results indicate the riskiness of roads such as Darabad,
Qeytariyeh Blvd, Kaveh Blvd, Tajrish Square, Moghaddas Ardebili Street, Erabi Street, Yaser
Intersection, Sadeghi Square in Region 1 of Tehran. Moreover, the topographic feature of the land in
Region 1 of Tehran is the main indicator affecting the riskiness of the mentioned routes. Key words:
urban routes, land topography indicators, the hazards of winter, Municipality Region 1 of Tehran, ANP
method.