规定了测定后视镜反射率的试验方法。适用于用于内部和外部安装的平面镜和凸面镜。用直接和间接校准方法描述仪器和程序。第二版取消并取代了第一版（1978年）。

Specifies a test method for determining the reflectance of rear view mirrors. Applies to flat and convex surface mirrors intended for internal and external mounting. Describes the apparatus and the procedure with a direct and an indirect calibration method. This second edition cancels and replaces the first edition (1978).