Abnormal vehicle identification method and system and medium

The invention discloses an abnormal vehicle identification method and system and a medium, and the method comprises the steps: judging whether a vehicle is located in a current map indicated by map information in response to the received map information sent by a road side unit, and storing the map information as target map information if the vehicle is located in the current map indicated by the map information; in response to the received signal lamp information sent by the road side unit, judging whether the signal lamp information is matched with the target map information, and if so, storing the signal lamp information as target signal lamp information; and in response to a received roadside unit message sent by a roadside unit, judging whether an abnormal vehicle exists in the current map based on the target map information, the target signal lamp information and the roadside unit message. According to the invention, abnormal driving of the vehicle without the V2X function on the road can be identified.