Highway network vehicle card inconformity auditing method

The invention relates to an expressway network vehicle card inconformity auditing method in the technical field of traffic information. The method comprises the steps of collecting RSU antenna flow data and portal license plate recognition data of an ETC portal regularly every five minutes; respectively acquiring a vehicle license plate number and vehicle characteristic information data, and grouping and comparing the vehicle license plate number and the vehicle characteristic information data according to vehicles to obtain a data set with inconsistent vehicle characteristic information; carrying out cartesian product operation processing, and list data of inconsistency of the same license plate number being listed; for N continuous ETC portals, repeatedly processing each portal in sequence; setting an inconsistent abnormal threshold value, removing the vehicle data which does not reach the set threshold value times, retaining the vehicle data which reaches or exceeds the threshold value, transmitting the ab