Why is it straight up and down, red and green?

If the left side of the top of the double-decker signal lamp is always red and the right side shows green light, it means that going straight is a state of release, and turning left is a state of prohibition. You can go straight through the intersection without being punished for running a red light.

If the leftmost two lanes are straight lanes, and the right side is a U-turn or left-turn lane, it is easy to drive to the middle. I don't know how to look at the traffic lights. At this time, the left light is usually a left turn light, and the right light is a straight light. There is a red light at the top left and a red light at the bottom right, which is used for turning left and turning around. Straight cars can't pass, but cars that turn around and turn left can pass.

Pass the traffic lights correctly.

When the red light turns green, it will also slow down the speed. Because there are many vehicles at the intersection, it takes some time to start automatically. Therefore, it is necessary to control the speed and flexibly control the driving speed of the vehicle according to the distance from the preceding vehicle. It is best not to stop at the intersection of traffic lights, which not only saves the fuel consumption when the vehicle starts, but also ensures the riding comfort.

When crossing the intersection, keep the speed at 20 to 30km/h, and then slow down and brake according to the change of traffic lights. Before entering the intersection, you should correctly judge the driving lane, actively observe the changes of traffic lights, pay attention to pedestrians on the crosswalk, and be prepared to stop at any time.