Traffic actuated control system having a control unit for each traffic phase

Claim 1

IN A TRAFFIC CONTROL SYSTEM FOR CONTROLLING THE OPERATION OF TRAFFIC SIGNAL MEANS DISPLAYING TRAFFIC SIGNALS INCLUDING AT LEAST ONE GO SIGNAL TO AT LEAST THREE TRAFFIC PHASES, AND WHEREIN EACH SAID PHASE IS A TRAFFIC ACTUATABLE PHASE HAVING TRAFFIC DETECTION MEANS ASSOCIATED THEREWITH FOR DETECTING TRAFFIC IN SAID PHASE; THE IMPROVEMENT FOR DIRECTLY TRANSFERRING CONTROL OF A GO SIGNAL DISPLAY ALLOCATED TO ONE OF SAID PHASES TO AN ACTUATED ONE OF SAID PHASE, WHEREIN SAID SYSTEM INCLUDES FOR EACH ONE OF SAID PHASES: MEANS FOR CYCLICALLY ALLOCATING SAID TRAFFIC SIGNAL DISPLAYS INCLUDING AT LEAST ONE GO SIGNAL DISPLAY TO SAID ASSOCIATED PHASE; CALLING MEANS CONTROLLED BY SAID ASSOCIATED DETECTOR MEANS FOR COMPLETING A CALLING CIRCUIT REPRESENTATIVE THAT SAID ASSOCIATED PHASE IS TRAFFIC ACTUATED; PHASE CHANGE OVER MEANS HAVING A NORMAL FIRST CONDITION AND A SECOND PHASE CHANGE OVER CONDITION, SAID PHASE CHANGE OVER MEANS CONTROLLED BY SAID ASSOCIATED DETECTOR MEANS SO AS TO BE IN ITS SECOND CONDITION WHEN SAID ASSOCIATED PHASE IT TRAFFIC ACTUATED; PHASE SELECTION SWITCHING MEANS CONTROLLED BY ANY ONE OF SAID CALLING MEANS ASSOCIATED WITH SAID OTHER PHASES, FOR PROVIDING A PHASE SELECTION SIGNAL, WHEN ANY ONE OF SAID OTHER PHASES IS TRAFFIC ACTUATED; AND,