Urban Road Traffic Operation and Network Structure Analysis under Driving Restriction Polities

• 1、School of Civil Engineering, Zhengzhou University，Zhengzhou 450001
• 2、City University of Zhengzhou, Zhengzhou 452370

Abstract：In order to alleviate traffic congestion and improve air quality, domestic cities began to gradually implement different driving restriction policies and got different effects. Using the public data of amap, based on the regional congestion index and air quality index, Zhengzhou City was taken as an example to carry out urban road traffic operation and road network structure and function analysis under different driving restrictive policies. Results indicate that impacts of the restriction policy on different featured areas and different time periods are different. For both even-odd license plate number driving restriction policy and two plate number driving restriction policy, the common conclusions are that: the area with more flexible travels has the greatest impact, mainly because the traffic mode shift and the travel time change are the largest; the traffic flow transfer occurs between different areas, and the path change might make the area that is not very congested become the most congested area after the restriction; there is little different between morning peak time period and non-peak time period, but the afternoon peak time period is significant; after the restriction, the congestion problem caused by structural and functional factors of the road network is prominent. The difference is:the improvement of the air quality index is more obvious when the even-odd license plate driving restriction policy are implemented, compared with the two plate number driving restriction policy.

Keywords： road traffic driving restriction policy congestion delay index air quality index