目前，为落实国务院安全生产会议精神，公安交管部门加大了对无牌无证摩托车、三轮车违章上路行驶的整治力度。广大群众自觉申领牌证的积极性明显提高。但是在工作中我们发现，由于摩托车、三轮车生产厂家众多，型号繁杂，结构不一，其发动机号、大架号的打印部位极不统一，给? At present, in order to implement the spirit of the State Council’s Conference on Work Safety, the public security departments have stepped up efforts to rectify unlicensed and unlicensed motorcycles and tricycles on the roads. The enthusiasm of the broad masses of people who voluntarily apply for a card has been significantly raised. However, at work, we found that due to the large number of motorcycles and tricycles manufacturers, complicated models and different structures, the printing areas of the engine numbers and the large numbers are very inconsistent.