Requirernents of the braking regulation by the United Nations Economic Commission for Europe (ECE) and the Europe Economic Community (EEC) foword the braking performace of semitrailer and semitractor are related individually.

• 分别介绍了联合国欧洲经济委员会（ECE）和欧洲经济共同体（EEC）制动法规对半挂车和半挂牵引车制动性能的要求。