Personal eye-protection; visors for motorcycle helmets

This document outlines the technical specifications for protective eyewear specifically designed to be integrated with motorcycle helmets. The guidelines define the optical properties required for the lenses, ensuring they provide clear vision under various lighting conditions while maintaining structural integrity. Detailed requirements are established for the resistance against impact, preventing shards from causing injury during an accident. The document also addresses the material composition, mandating the use of substances that do not degrade quickly under exposure to sunlight or harsh weather. Tests are specified to verify the ability of the eyewear to withstand extreme temperatures and chemical exposure. Furthermore, the standard covers the mechanical fixation methods, ensuring the lenses remain securely attached to the helmet frame during high-speed travel or impact. It sets limits for optical distortion to minimize rider fatigue and maintain situational awareness. The scope includes definitions for different types of glazing and their appropriate applications within the context of two-wheeled vehicle safety equipment.