This project implements motor vehicle noise and diesel vehicle emission inspection and management policy planning. The overall results include 1) Type approval of motor vehicle, 2) Conformity of production, and 3) Assistance in management planning and policy implementation; the description is as follows: 　1.Type approval of motor vehicle: 1,445 cases of type approval of motor vehicles, including 238 cases of engine families and 1,207 cases of noise vehicle types, were granted up to 31th October, 2019, and the number of certifications increased by 66 cases compared with the average of 1,379 cases in the same period of the previous two years, which increased efficiency by 4.8% and strengthened source management. 　2.Conformity of production: 301 sampling tests of new motor vehicles were carried out, and 2 models were judged to be unqualified individually due to the unusual acceleration from the failure of electronic control unit, and the incorrect installation of exhaust plug. 1,422 quality control tests were investigated (including 171cases of diesel vehicle models and 1,251 cases of noise vehicle types). Since the sampling does not be complied with requirements, 2 authorizations of vehicle models were paused and 33 vehicle models should complete quality control tests before 12/31 to ensure maintain the conformity of production for emission and noise. Otherwise, the reality inspection of motor vehicle were established and 4 inspect cases were conducted. EPA requires returning the certificate for 1 vehicle model, and resubmitting the test report for 3 vehicle models to modify the specification. 　3.Assistance in management planning and policy implementation: Promote the synchronization of the management with international societies through the sixth stage of diesel emission and noise control, meanwhile in order to streamline procedure, applicants can classify different types of specifications (such as silencers and engine compartment) in the same noise vehicle type depend on their requirements. In addition, by strengthening the quality control tracking and adjusting a small number of vehicles' independent quality control sampling (adding quality control tests once every 10 vehicles) as a supporting management to maintain control quality. A noise certification system for replacement mufflers is planned. The manufacturer or importer should select the vehicle model and muffler to perform pass-by noise test, then prepares and the submit qualification test report and related documents to the EPA for type approval of replacement muffler. A total of 2 companies (8 certifications) were complete the certification job.

Type approval, Conformity of production, sixth- stage regulation