Abstract：The typical vehicle model and the rutting road model were established by CarSim simulation software according to vehicle dynamics theory and road engineering standards. Sixteen driving conditions were designed， and the model was verified. Based on the automobile manufacturing specifications and stability test rules, five driving stability indexes of lateral acceleration, roll angle, yaw rate, breaking distance and offset distance were selected, and their thresholds were established. The rutting with different depths was added into the pavement model, and the stability of each index was investigated by observing the numerical value. The quantitative indexes of rutting threshold of asphalt pavement under different driving conditions were proposed. The results show that under different driving conditions, the impact of rutting on driving stability is different. The rut threshold of asphalt pavement is decreased with the increasing of speed and water film thickness, and the impact of mobile rutting is more severe than that of structural rutting at the same depth. Considering the stability requirement of vehicles on rutting roads, the rutting threshold values of straight and curved roads under different driving conditions are proposed.
