Li Guo-dong Ma Chao-qun （University of chang’an Highway College,shaanxi xi’an 710000） With the rapid development of urbanization and motorization in large cities, the conflict between non-motor vehicles and motor vehicles at intersections has become increasingly prominent.The common way to solve this problem is to carry out scientific channelization design and reasonable signal configuration. In this paper, the purpose of the channelization by turning right ahead is to divert the turn right traffic flow, and the traffic capacity of the right turn lane is analyzed based on the gap theory. Finally, the actuated signal control is used instead of the fixed signal control to optimize the signal timing.Taking the intersection of Guyang Road and Lushan Road in Zhenjiang City, Jiangsu Province as an example, the actual survey data for five consecutive days was imported into VISSIM for simulation. By comparing the indicators before and after optimization, the traffic capacity was improved by 26.4%. During the evening peak period, the delay time decreased by 44.37%, the early peak delay decreased by 35.22%, and the service level of the entire intersection was upgraded from C to B. At the same time, the number of stops and queue length of the vehicle at the intersection was reduced.The research shows that the establishment of the early right-turn lane can effectively avoid the conflict between the right-turning motor vehicle and the direct-moving non-motor vehicle, and improve the traffic capacity of motor vehicles and non-motor vehicles. At the same time, the actuated signal control can effectively reduce the overall delay of the intersection and improve the smoothness and service level. Key Words: Turn Right Ahead; Capacity; Actuated Signal Control; Intersection Canalization Design; VISSSIM Simulation.

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