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At the crossing, the vision of a car's driver will be blocked if there is a large vehicle in front of his car, making him does not see the traffic light. The traffic light is still green when the large vehicle goes across the stop line, but would perhaps turn red when the car is going to go across the stop line, which would results in having the car' s driver break the traffic law or causing traffic accident.
The Traffic Assist Lamp provides great convenience for drivers to see the traffic light easily, which can help to reduce traffic accidents.