The traffic police checked whether drunk driving was legal at the traffic lights.

Legal analysis: the object of drunk driving is the driver who drives a motor vehicle on the road. It is legal to check drunk driving no matter where you are, and it may be legal for traffic police to check drunk driving at home, as long as there is evidence that you were drunk driving before you went home. It is a rule that driving a motor vehicle on the road should keep a certain distance from the vehicle driving ahead. It's okay to find the red light halfway. As long as you don't run the red light, it's your own business not to stop.

Legal basis: Article 133 of the Criminal Law of People's Republic of China (PRC) stipulates that anyone who drives a motor vehicle on the road while drunk shall be detained and fined. Drunk driving a motor vehicle, under any of the following circumstances, shall be given a heavier punishment in accordance with the provisions of the first paragraph of Article 133-1 of the Criminal Law:

(1) Causing a traffic accident, taking full or main responsibility for the accident, or causing an escape after a traffic accident, which does not constitute other crimes,

(2) The blood alcohol content is above 200mg/100ml; (3) Driving on expressways and urban expressways; (four) driving a motor vehicle to carry passengers; (five) serious overcrowding, overloading or speeding; Without motor vehicle driving qualification; The use of forged or altered motor vehicle number plates seriously violates the road traffic safety law; (6) evading inspection by public security organs according to law; Or refuse or obstruct the public security organs to check according to law. Drunk driving a motor vehicle, obstructing the public security organ's inspection according to law by violence or threat, which constitutes other crimes such as obstruction of official duties, shall be punished according to the requirement of combined punishment for several crimes.