Safety Glass Directive 92/22/EEC
The EU's Directive on vehicle safety glazing is based on a single-market legal footing, the main justification for the legislation having been the need to eliminate any barriers to trade that might result from requirements concerning automotive glazing that differed from one EU Member State to another.
The Directive covers not only the automotive glazing products themselves but also the fitting of these parts to vehicles.
The official text of the Directive is here.