Research on the Status Quo of In-use vehicle Environmental Protection Regular Inspection in Tangshan

The project team collected more than 1 million in-use vehicles environmental protection regular inspection data for analysis, the data of annual inspection in Tangshan area are sorted out and analyzed, the conclusion is as follows: 1. The weighted average qualification rate of each inspection method for in-use vehicles in Tangshan was 87.9%. 2. The weighted average qualification rate of different emission stages of VMAS is 88.7%, the weighted average qualification rate of different emission stages of TSIC is 93.9%, the weighted average qualification rate of FRAC in different emission stages is 98.3%, and the weighted average qualification rate of LUGDOWN in different emission stages is 77.8%. 3. After the implementation of the new standard, the qualified rate of TSIC and LUGDOWN in Tangshan will be greatly reduced, but it has little influence on the qualified rate of VAMS and FA.