Counters are intended to be mounted inside of signal head and beside standard traffic lights, giving the information about the time left for green, yellow or red traffic lights. Green light time duration is shown on green digits, yellow light with yellow digits and red light with red digits. Two colors (red, green) or three colors (red, yellow, green) counters. Have high brightness, connected parallel to the traffic lights. Red, green and yellow LEDs are separated in the same module. Self-learning and recording of vehicle or pedestrian phase times during first cycle. Start counting down after two identical cycles. In case of time changes automatically calculate a new time period.