本文件规定了评估配备车道保持辅助系统（LKAS，见3.2）车辆性能的试验方法和性能指标。 为此，定义了与车辆动力学相关的变量，以及带有LKAS的车辆的可控性及其测量方法。 需要驾驶员干预的系统不在范围内。本文件适用于M1类车辆。

This document specifies test methods and performance metrics to evaluate the behaviour of a vehicle equipped with lane keeping assistance system (LKAS, see 3.2). For this purpose, variables relevant to vehicle dynamics as well as controllability of a vehicle with LKAS and their measurement methods are defined. A system requiring a driver intervention is excluded from the scope. This document applies to the vehicles of M1 category.