Discussion on the application of highway noise prediction model

highways;  noise pollution;  Noise prediction

Taking Xuluo Expressway as an example, the noise pollution and traffic flow conditions at multiple points of the highway were measured for many times, and according to the actual measurement results, the noise prediction model in the highway environmental impact assessment specification (trial) was corrected and verified, and the problems that should be paid attention to in this process were discussed. The results show that when the specific traffic volume and model ratio of the highway cannot meet the applicable conditions of the trial specification mode, the mode should be appropriately corrected. For Xuluo Expressway, the correction method should adopt the same speed of all types of vehicles during day and night, without considering the night deceleration, not considering the decrease in speed when the traffic volume is insufficient, and the correction method of fixed speed is adopted for all types of vehicles, so as to obtain better prediction results.