To control air pollution of in-used diesel vehicle effectively, according to the 40th , 41st and 42nd regulation of the air pollution control law ,Environmental Protection Administration established the Chassis Dynamometer Smoke Test(CDST) stations in counties and cities, to execute in-used diesel vehicle non-periodical emission inspection program.The program urge vehicle owner to repair and maintenance the vehicle at well condition,to ensure that vehicle can emitted pollutant at a reasonable level and improve the air quality in the district. This project had audited the CDST stations twice this year, and implemented the proficiency testing program by standard vehicles,to evaluate the station’s inspection quality and ability,in conclusion,to improve the inspection and testing quality of CDST stations.And through the implementations of diesel vehicle smoke test database system ,testing standard operation procedure(SOP) manual and quality control manual,to promote the public trust and enforce the law effectively. Finally, the project made poster and manual of diesel vehicle smoke control measure policy,and invited national transportation business person attend the policy meeting, to make emission control policy simplify and convenient for people,in addition,can reduce the social cost and resentment.

Chassis Dynamometer Smoke Test(CDST) station,Evaluate,Proficiency testing