According to the administrative measures on motor vehicle safety technology testing stations issued by the ministry of public security of the People's Republic of China, the requirements on the equipment for the testing of related performance of automobiles and the testing of specified items of automobiles with special vehicle testing equipment can be divided into the following six items. (1) side slip of steering wheel. (2) braking performance. (3) speedometer error. (4) headlight performance. (5) exhaust emissions. (6) horn sound level and noise.