Regulation 1 of the Economic Commission for Europe of the United Nations (UN/ECE): Uniform provisions concerning the approval of motor vehicle headlamps emitting an asymmetrical passing beam and/or a driving beam and equipped with filament lamps of category R2 and/or HS1
联合国欧洲经济委员会(联合国/欧洲经委会)条例1:关于批准发射不对称近光和/或远光并配备R2和/或HS1类白炽灯的机动车前照灯的统一规定
Regulation 1 of the Economic Commission for Europe of the United Nations (UN/ECE): Uniform provisions concerning the approval of motor vehicle headlamps emitting an asymmetrical passing beam and/or a driving beam and equipped with filament lamps of category R2 and/or HS1