A left-turn waiting zone refers to a several-meter-long white dashed line area added in front of the left-turn lane, directly connected to the middle of the road. When the straight-through signal for the same direction turns green, vehicles in the left-turn lane must move forward into the waiting zone and wait for the signal to change. Only when the left-turn signal turns green can they proceed to turn left. Below are details about the waiting zone: 1. Precautions: The left-turn waiting zone is exclusively for left-turning vehicles. When the straight-through signal for the same direction is green, even if the left-turn signal is red, left-turning vehicles are allowed to enter the left-turn waiting zone at the intersection and wait until the left-turn signal turns green before proceeding through the intersection. It is important to remind drivers that the left-turn waiting line is not a "stop line." If both the straight-through and left-turn signals are red, all vehicles must wait behind the previous stop line. 2. Details: The left-turn waiting zone is several meters long. According to China's road width standards, each urban arterial lane is 3.5 meters wide. Roads implementing the left-turn waiting zone are generally one-way roads with three or more lanes. Based on each traffic signal cycle, it is estimated that 3 to 4 more vehicles can pass per cycle, amounting to approximately 100 vehicles per hour. This measure effectively increases the traffic capacity at intersections and reduces vehicle congestion.
