COMTRAC

ELECTRIC AND ELECTRONIC TRAFFIC CONTROL SYSTEM-NAMELY, COMPUTER CONTROLLED MASTER TRAFFIC CONTROL SYSTEM; TRAFFIC RESPONSIVE MASTER TRAFFIC CONTROL SYSTEM; MASTER CONTROLLERS FOR TRAFFIC CONTROL SYSTEM; COMPUTER CONTROLLED MASTER CONTROLLERS FOR TRAFFIC CONTROL SYSTEMS; LOCAL CONTROLLERS CONTROLLED BY SUCH ELECTRIC OR ELECTRONIC TRAFFIC CONTROL SYSTEM; MAP DISPLAY OF THE CONTROLLED SYSTEM; TELEGRAPH PRINTER USED IN SUCH ELECTRIC OR ELECTRONIC TRAFFIC CONTROL SYSTEM