Time counting traffic signalling system

Claim 1

IN COMBINATION WITH A PLURAL DIRECTION TRAFFIC SIGNALLING ASSEMBLY HAVING THREE DIFFERENT SIGNAL LAMPS FOR EACH DIRECTION AND TIME COUNTDOWN DISPLAY MEANS, A CONTROLLER FOR GOVERNING OPERATION OF THE SIGNALLING ASSEMBLY AND THE COUNTDOWN DISPLAY MEANS COMPRISING, A LAMP CONTROL SECTION HAVING A PLURALITY OF SWITCHING DEVICES RESPECTIVELY CONNECTED TO EACH OF THE SIGNAL LAMPS FOR RENDERING THE SAME OPERATIVE AND INOPERATIVE, CONTROL GATE MEANS OPERATIVELY CONNECTED TO SAID SWITCHING DEVICES FOR EXTERNALLY CONTROLLING OPERATION OF TWO OF THE SIGNAL LAMPS FOR EACH DIRECTION AND MEANS INTERCONNECTING SAID SWITCHING DEVICES AND THE CONTROL GATE MEANS FOR INTERNALLY CONTROLLING OPERATION OF THE THIRD SIGNAL LAMP FOR EACH DIRECTION IN A PREDETERMINED SEQUENCE WITH THE TWO SIGNAL LAMPS, A TIMING SECTION CONNECTED TO SAID CONTROL GATE MEANS OF THE LAMP CONTROL SECTION FOR SUPPLY OF TIMED SIGNAL PULSES TO SEQUENTIALLY OPERATE THE SWITCHING DEVICES DURING A TIMING CYCLE, AND LOGIC CIRCUIT MEANS CONNECTING THE TIMING SECTION TO THE DISPLAY MEANS FOR DISPLAYING TIMING INFORMATION DURING A PORTION OF SAID TIMING CYCLE WHEN ONE OF SAID TWO EXTERNALLY CONTROLLED SIGNAL LAMPS IS OPERATIVE.