Abstract: A traffic signal control system employing universal coordinated time of GPS as time base. The control system includes a core system for receiving Universal Coordinated Time (UTC) data of GPS and incorporating longitude and latitude data so as to convert the data to local time. This time is used as common time base for all traffic signal system. The control system further comprises a basic input/output system and a selective secondary system. The present system is a high stability disperse type traffic signal control system.

Abstract: A synchronous and/or programmed flare control method for an outdoor light signal group is designed by having coordinated universal time from the global position system and planned control of the light source group to achieve sync-programming flare; power source for each light source being separately connected to allow maximal cable layout flexibility without having to provide signal cable between controller and each light signal.

Abstract: A traffic signal control system employing universal coordinated time of GPS as time base. The control system includes a core system for receiving Universal Coordinated Time (UTC) data of GPS and incorporating longitude and latitude data so as to convert the data to local time. This time is used as common time base for all traffic signal system. The control system further comprises a basic input/output system and a selective secondary system. The present system is a high stability disperse type traffic signal control system.