Evaluation of Asphalt Concrete Pavement Based on Passenger Ride Comfort Level

In order to provide a theoretical basis for the ride comfort level evaluation, daily management, and maintenance of asphalt concrete pavement, the performance parameters and three-directional acceleration data of highway pavements were measured indoors and outdoors. Using these data, the relationship between the mean square of weighted acceleration and the pavement performance was studied. A linear regression equation that reflects the relationship between the root mean square of weighed acceleration, speed, and roughness was obtained by fitting 214 groups of experimental data. In addition, the outdoor experimental results were verified using a driving simulator. The results show that the root mean square of weighed acceleration is strongly correlated with roughness, moderately correlated with the speed, and weakly correlated with the dynamic friction coefficient. Given a certain dynamic friction coefficient, the ride comfort level of an asphalt concrete pavement reduces with its roughness and driving speed increasing. When the roughness is 1.35 and 3.05 mm/m, the maximum speed with an appropriate ride comfort level is 124.1 and 88.7 km/h, respectively.