Study of traffic flow characteristics on icy and snowy pavement of city based on multivariate statistical analysis

The Factor analysis method was applied to research the traffic flow on urban road with the field data of arterial on North city in the period of snow. And the traffic status was divided into three types by clustering the factor score. By clustering the frequency of the traffic status, the types of traffic status of different pavement can provide the theoretical foundation of identification of traffic flow status in Traffic Guidance System on North city in winter.