Specifies requirements and tests for flat and curved heat-treated (toughened or tempered) and laminated safety glass for road vehicles, railway locomotives, rolling stock and other railway vehicles. Provision is made for standard laminates for other than windscreens, and for high performance laminates meeting the optical requirements specified for heat-treated safety glass suitable for windscreens. A general section covers the optical, quality and dimensional requirements of both heat-treated and laminated glass, and separate sections state the specific requirements for each type. Tests are prescribed for uniformity and fragmentation of heat-treated glass, and for light stability, fracture and adhesion, boiling water and impact resistance (high performance laminates) of laminated glass. A luminous transmittance of not less than 75 percent is recommended for windscreens and 70 degrees for safety glass other than windscreens. Obscuration bands and special application are considered separately.