本文件规定了一种比较不同路面上各种道路交通成分的交通噪声的方法，以评估不同的路面类型。代表轻型或重型车辆以选定速度行驶的声级分配给特定路面。该方法适用于以恒定速度行驶的交通，即在50 km/h及以上的标示速度下的自由流动条件。对于交通不自由流动的情况，如交叉路口和交通拥堵的情况，该方法不适用。 比较路面噪声特性的标准方法为道路和环境主管部门提供了一种工具，用于确定符合特定噪声标准的路面使用的常规做法或限制。然而，建议此类标准不在ISO 11819（所有部分）的范围内。 统计通过（SPB）方法适用于以下主要目的: -根据路面对交通噪声的影响对路面进行分类（路面分类）； -协助验证路面生产的一致性； -根据新条件，评估整个作业过程中路面的声学性能； -评估不同路面对现场交通噪声的影响，而不考虑路况和使用时间； -以评估道路表面相对于参考表面的声学性能。 由于实际限制，该方法不能应用于所有可能的位置。然而，背板方法可以允许测试以前不可接受的某些位置。 第5条给出了SPB方法的一般描述。

This document specifies 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 conditions where traffic is not free flowing, such as at junctions and where the traffic is congested, the method is not applicable. A standard method for comparing the noise characteristics of road surfaces gives road and environment authorities a tool for establishing common practices or limits regarding the use of road surfaces meeting certain noise criteria. However, it is not within the scope of ISO 11819 (all parts) to suggest such criteria. The statistical pass-by (SPB) method is suitable for use for the following main purposes: —    to classify road surfaces according to their influence on traffic noise (surface classification); —    to assist in verifying conformity of production of road surfaces; —    to evaluate acoustic performance of road surfaces throughout operation relative to new condition; —    to evaluate the influence of different road surfaces on traffic noise at sites irrespective of condition and service time; —    to evaluate acoustic performance of a road surface relative to a reference surface. Due to practical restrictions, the method cannot be applied at all possible locations. However, the backing board method can allow some locations to be tested that were not previously acceptable. Clause 5 gives a general description of the SPB method.