Regulation No. 31, Uniform Provisions Concerning the Approval of Halogen Sealed-beam Unit (HSB Unit) Motor Vehicle Headlamps Emitting an Asymmetrical Passing Beam or a Driving Beam or Both;
Regulation No. 31, Uniform Provisions Concerning the Approval of Halogen Sealed-beam Unit (HSB Unit) Motor Vehicle Headlamps Emitting an Asymmetrical Passing Beam or a Driving Beam or Both;