Road network traffic bottlenecks and recognition often made occasional bottlenecks

The present invention relates to the field of urban traffic management, road network is designed to provide recognition often send traffic bottlenecks and occasional bottlenecks. The road network bottlenecks and often sporadic hair bottleneck identification method comprising the steps of: obtaining a desired speed data link to all the identified road network, calculates an average link travel time, congestion area of ​​influence is determined road segment, all road network computing section of the global average rate, in accordance with the level of service screening congested road, road congestion obtain the frequency of occurrence, often made to obtain bottlenecks and occasional bottlenecks. The present invention utilizes the influence area defined congestion, average speed as a basis for calculating the global identification, can effectively eliminate the influence of random factors; Further, the present invention can simultaneously identify bottlenecks and incidental bottlenecks often occur.