How to Read Road Traffic Signal Lights?

[DeBarrett]

Traffic signal lights are divided into two types: arrow indicator lights and circular lights. When the circular light is red, going straight and turning left are prohibited, but turning right is allowed; when the circular light is green, you can go straight, turn left, or turn right. For arrow indicator lights, follow the direction indicated by the arrow. Below is extended information: 1. Straight intersections: Straight intersections only use one set of traffic lights. When the light is red, going straight stops, and when the light is green, going straight is allowed. For intersections where U-turns are permitted, U-turns can be made at any traffic light, but some places may specifically mark "U-turn on red" for safety reasons, in which case U-turns can only be made when the light is red. 2. T-intersections: T-intersections generally include three situations, represented below as types A, B, and C.