300mm Traffic Signal Countdown Timer , Countdown Pedestrian Signal

300mm Traffic Signal Countdown Timer , Countdown Pedestrian Signal 1. Description This signal is specially designed to increase the safety of car driver, by showing number of seconds left to change signals from red light to green light or from green signal to red signal to assist drivers to determine if he should continue driving or should slow down to wait for light changed. When Green Vehicle Signal is on, the Green Digits will be shown with count down digits, to show the