Why all road traffic lights around 3 seconds before and after the transformation is in an emergency

Road traffic light is used to give conflicting traffic flow distribution of useful right of way, to progress the capacity of road traffic safety and road traffic lights. Traffic lights usually consists of a red light, green light, yellow light. Red light shows no thoroughfare, green light shows that

 road traffic light is used to give conflicting traffic flow distribution of useful right of way, to progress the capacity of road traffic safety and road traffic lights. Generally speaking, red traffic lights' A red light, cherry varieties. 】 , green, yellow light. The red light shows no thoroughfare, green light shows that allow passage, yellow light indicates that warning. We are looking at the road when the traffic lights in time to pay attention to before and after the transformation, why? The following is to analyze for you. 1, traffic lights, 3 seconds is 'high risk' time before and after the transformation is not only a green light to the final two seconds is very dangerous, in fact, are at high risk of 3 seconds before and after the transformation of traffic lights. The signal conversion contains green yellow light, yellow light red light, red light green light three conditions. Among them, present the 'crisis' is the largest, when the yellow light yellow light, as long as 3 seconds to avoid electronic police exposure, running yellow light' Running yellow light is violation of tao RDB, yellow warning lamp said. 】 Drivers must increase speed, emergency and easy to neglect, accident risk is greatly increased. 2, green - — Yellow light - — Red light 'running yellow light' relatively simpler cause accidents, under normal circumstances, after the green light, to pass into the red light yellow light, so the transition of yellow light as a green light turns red, general is 3 seconds. And green to yellow light before the final 3 seconds, with yellow light for 3 seconds, this just six seconds, is the most simple traffic accident. Main reason is that the pedestrian or driver to get the final seconds, force through intersections. 3, a red light - — Green: with must speed into the intersection simple collision turning vehicles in general, the red light does not need through the yellow light transition, directly into a green light. Semaphores are seconds countdown in many places, many people like driving distance to stop line for parking meters and beyond such as red light, when the red light and then there were three seconds ahead of starting forward, just a few seconds will progress to more than 40 kilometers per hour, can be through the intersection in an instant. In fact, this is very dangerous, because at that time is now with the car into the intersection must speed, if there are any left vehicles haven't go out, just simple direct hit. The above content from manufacturers of new energy, the antenna reproduced please indicate.