Selection of City´s entrance and exit based on node important degree

City entrance roads have the double function of urban roads and external traffic. With the development of city´s economy and City entrance; Fuzzy clustering; Node important degree acceleration of regional integration, the traffic volume of urban road is growing in a high speed, entrance road is also faced with unprecedented traffic pressure as a constraint to the development of urban transport. Therefore, planning and designing the road entrances into the overall urban planning become an important aspect. Node important degree is analyzed in this paper and applied to the selection of the city entrance City entrance; Fuzzy clustering; Node important degree.