If the vehicle does not cross the stop line as a whole, it is not regarded as running a red light; If it is found from the monitoring that the whole vehicle crosses the stop line, there are obvious signs of movement and driving, and there is obvious position movement, which belongs to running a red light.
If the vehicle just crosses the stop line at the red light, but stops immediately, the traffic control department will not punish it.
Legal basis: Article 107 of the Road Traffic Safety Law: If the violator of road traffic is given a warning or a fine of less than 200 yuan, the traffic police can make a decision on administrative punishment on the spot and issue a written decision on administrative punishment. The written decision on administrative punishment shall specify the illegal facts of the parties, the basis of administrative punishment, the content, time and place of punishment and the name of the punishment organ, and shall be signed or sealed by law enforcement officers.