For which area is AS3 glass permitted?

AS3 glass is specifically permitted for certain areas of the vehicle, and the correct answer indicates that it can be used at the rear of the driver in various vehicles that are equipped with an exterior mirror. This permission is in accordance with regulations that are designed to ensure safety while allowing some flexibility in vehicle design.

The rationale behind this designation is that AS3 glass offers a balance between visibility, safety, and manufacturing considerations. By allowing AS3 in locations that are less critical for forward vision, while still requiring more stringent standards for the windshield and side windows, regulations aim to enhance overall vehicle safety.

In contrast, using AS3 glass in windshields or side mirrors would not meet safety standards due to visibility issues. Windshields require higher-grade glass to maintain structural integrity in case of accidents while providing clear visibility. Additionally, side mirrors must have certain properties to ensure that drivers can see adjacent vehicles clearly, which may not be achievable with AS3 glass.