联合国欧洲经济委员会（UN/ECE）第12号法规-关于在发生碰撞时保护驾驶员免受转向机构影响的车辆认证的统一规定

Regulation No 12 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of vehicles with regard to the protection of the driver against the steering mechanism in the event of impact