In order to improve the traffic capacity of the highway construction area and reduce the traffic conflict rate, this paper puts forward five kinds of speed management measures for the proposed construction evacuation road during the construction of the upper cover of the Egongying Tunnel based on the dynamic characteristics, operation speed, acceleration and other parameters of different vehicles. Vissim software is used for simulation and comparative analysis. Combined with the simulation data, the design and speed management scheme of the proposed construction evacuation road are evaluated and improved. The improved scheme combines the original three lanes together, the turning radius increases from 15m to 100m, and the speed limit value of the bend increases from 20 km/h to 40 km/h. The results show that the hierarchical speed limit measures for roads in the construction area can effectively reduce the travel time, delay, queue length and conflict rate of vehicles in the construction section. The three-level speed limit measures can reduce the conflict rate of the proposed evacuation road in two driving directions by 0.6 times.m^?1; In the improved scheme, more than 80% of the vehicles can control the speed at about 40km/h before the entrance curve. It can be seen that different speed limits for different models can shorten the travel time of vehicles in the construction section and effectively reduce the average delay of vehicles.