描述用于评估不同路面类型的道路交通的各种组成的不同路面上的交通噪声的方法。以特定速度表示轻型或重型车辆的声级被分配到某一路面。该方法适用于以恒定速度行驶的交通工具，即以50公里/小时及以上的速度自由流动的状况。对于交通不畅通的其他行驶条件，例如交汇处，交通拥堵状况，路面不重要

Description of a method of comparing traffic noise on different road surfaces for various compositions of road traffic for the purpose of evaluating different road surface types. Sound levels representing either light or heavy vehicles at selected speeds are assigned to a certain road surface. The method is applicable to traffic travelling at constant speed, i.e. free-flowing conditions at posted speeds of 50 km/h and upwards. For other driving conditions where traffic is not free-flowing, such as at junctions and where the traffic is congested, the road surface is of less importance.