Should straight-going vehicles yield to left-turning ones or vice versa at traffic lights?
1 Answers
Left-turning vehicles should yield to straight-going ones. Here is relevant information: Light colors: Initially, there were only red and green colors. Later, after improvements, a yellow light was added. The red light means stop, the yellow light means prepare, and the green light means go. The choice of these three colors for traffic signals is related to human visual structure and psychological reactions. The human retina contains rod cells and three types of cone cells. Rod cells are particularly sensitive to yellow light, while the three types of cone cells are most sensitive to red, green, and blue light, respectively. Due to this visual structure, humans can most easily distinguish between red and green. Although yellow and blue are also easily distinguishable, since there are fewer light-sensitive cells in the eye that are sensitive to blue light, red and green are still the best choices for color distinction. Traffic signals: At intersections, red, yellow, and green traffic lights are hung on all four sides, serving as silent 'traffic police.' Traffic lights are internationally unified traffic signals. The red light is a stop signal, and the green light is a go signal. At intersections, vehicles from several directions converge here, some going straight and others turning. The question of who should go first is determined by the traffic lights. When the red light is on, straight-going or left-turning is prohibited, but right turns are allowed if they do not hinder pedestrians or other vehicles. When the green light is on, vehicles are permitted to go straight or turn. When the yellow light is on, vehicles should stop at the intersection stop line or within the crosswalk if they have not already proceeded. A flashing yellow light warns vehicles to pay attention to safety.
