The scope of this SAE Standard is to provide methods to determine display optical performance in all typical automotive ambient light illumination - with focus on High Ambient Contrast Ratio, which is critical for display legibility in a sunshine environment. It covers indoor measurements and simulated outdoor lighting.
It is not the scope of this document to set threshold values for automotive compliance. However some recommended values are presented for reference.
A new method was added to calculate the contrast in high ambient illumination based on scalable illumination data, it may be applicable to in vehicle white shirt / skirt reflections.