Abstract:How to realize the slow traffic planning is analyzed and studied for the urban complex functional area. Taking the re-planning improvement of an urban non-passable road based on the slow traffic idea as an example, the mathematic model theory of vehicle flow is used to calculate the passable capacities of motor vehicles and non-motor vehicles. The situation of non-motor vehicles crowding sidewalk is optimized through the methods of reducing the motor vehicle lane widths, increasing the tide lanes and widening the non-motor vehicle lanes. After the completion of improvement, the actual passable capacity of this road is greatly improved. The social investigation and study show that the public's satisfaction with the traffic condition of the road has been greatly improved.