To analyze the traffic safety situation in the ramp-intertwined area of East Jincheng Interchange in Shanxi Province,based on the traffic conflict technique,this paper combined VISSIM traffic micro-simulation and Safety Alternative Assessment Model(SSAM)to evaluate the safety in the intertwined area.The results showed that,with the increase in the traffic volume,the traffic conflict number increased,and the traffic conflict rate initially showed a simultaneous increase and then a decrease after the service level in the intertwined area became saturated.Finally,to improve driving safety,this paper proposed measures to enhance the design scheme such as reasonable diversion by utilizing the surrounding road network,increasing the length of the intertwined area,and adding auxiliary lanes and speed limitations in the intertwined area,expecting to provide a reference for the design of the safety of other highways.
维普
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