Analysis of Traffic Accident of Grade-I Highway in Prairie Region

Grade-I highway is one of the most component of the road network in prairie region. With the rapid growth of this kind of way,traffic accidents happen more and more frequently,which arouse attention of government departments and researchers. Beginning with basic data of traffic accidents in grade-I highway,analyzing the data of traffic accident of the integral subgrade and separated subgrade,it′s clear that the features of severity,time and space distribution vehicle type of the accidents in grade-I highway in prairie region has been showed,and the cause for each feature has been given. The conclusion will be helpful for government departments to take measures to decrease the traffic accidents.