The countdown is a new equipment of urban traffic signal auxiliary method, synchronized with the motor vehicle lights, to show remaining display time of red, yellow, green light color for drivers , thereby reduce the time delay when the vehicles pass through the intersection and improve traffic efficiency. The latest countdown display Xin Tong has developed are of three sizes, respectively, 600 × 820mm, 760 × 960mm and pixel tube display countdown (size could be adjusted arbitrarily). Each speci cation is divided into three kinds of display, respectively, single red display, red and green display, red, yellow and green display. |