Abstract: In a control system for controlling traffic signal lights, normally supplied with power from the AC source, the combination comprising flasher means electrically connectible to the lights to cause the lights to come ON and OFF, repeatedly, an electrical power storage device electrically connectible to the flasher means for supplying electrical power to operate the flasher means when AC source power is not supplied to the traffic control system, and a charging device for charging the storage device when AC power is normally supplied to the traffic control system.

Abstract: A circuit capable of reducing power consumed by all of the signal lights at a street intersection is presented. The circuit comprises activating switching means which activate the circuit. The circuit further includes timing current interruption means which are turned on by the activating means. The timing current interruption means inhibit the 24 volt, low voltage supply to the load switches of the selected signal lights thereby preventing the power normally supplied to the signal lights from being supplied to the signal lights while the low voltage supply is inhibited. A preferred mode of operation inhibits alternate cycles of the AC power so that only 30 or every other of the 60 cycles of AC power normally transmitted to the traffic signal light each second are actually transmitted to the traffic signal light.