When the red light is on, no vehicle is allowed to pass. You can't go straight into the side road ahead. If there is no sign prohibiting U-turn and lane change, you can turn around, but you must not hinder the passage of normal vehicles and pedestrians.
The straight lane can turn as follows:
1, you can definitely make a U-turn at the intersection with the U-turn sign, but you should make a U-turn according to the actual situation without interfering with other passing vehicles or pedestrians;
2. Intersections with U-turn lights: Just turn around in the designated lane according to the instructions of the signal lights;
3. There is a place to make an early U-turn: When many roads are approaching the intersection, there will be an early guide lane dedicated to turning left and turning around. The driver should turn on the left turn signal in advance and turn around without affecting other normal vehicles.
legal ground
Regulations of the People's Republic of China on the Implementation of Road Traffic Safety Law
Thirty-eighth when the green light is on, vehicles are allowed to pass, but turning vehicles shall not hinder the passage of straight vehicles and pedestrians; When the yellow light is on, vehicles that have crossed the stop line can continue to pass; When the red light is on, no vehicle is allowed to pass. At intersections where there are no non-motor vehicle signal lights and crosswalk signal lights, non-motor vehicles and pedestrians should follow the signs of motor vehicle signal lights. When the red light is on, vehicles turning right can pass, which does not hinder the passage of vehicles and pedestrians who have been released.
Road Traffic Safety Law of the People's Republic of China
Article 90 Motor vehicle drivers who violate the provisions of laws and regulations on road traffic safety shall be given a warning or fined from 20 yuan to 200 yuan. If there are other provisions in this law, it shall be punished in accordance with its provisions. Whether the straight lane can turn around depends on the specific situation, and there is no place where it is forbidden to turn around. There are no signs or markings prohibiting left turn; U-turn vehicles shall not hinder the passage of other normal vehicles and pedestrians. Did not turn around; There are signs and markings prohibiting U-turn; Where there is no left turn sign; Railway crossings, crosswalks, bridges, sharp bends, steep slopes, tunnels or dangerous sections are not allowed to turn around.