1981年7月20日第81/577/EEC号理事会指令，修订了关于近似成员国有关机动车辆内部配件（座椅及其固定点强度）的法律的第74/408/EEC号理事会指令

Council Directive 81/577/EEC of 20 July 1981 amending Council Directive 74/408/EEC on the approximation of the laws of the Member States relating to the interior fittings of motor vehicles (strength of seats and of their anchorages)