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| Number | Title | Issue Date |
| 8035530 | RFID intelligent traffic signaling A system and method for regulating the flow of traffic at a roadway intersection having one or more traffic signals by positioning a processor in the vicinity of the intersection to store cycle times of the traffic flow directions, mounting an RFID reader in the vic... | 10/11/2011 |
| 7557731 | RFID reader enabled intelligent traffic signalling and RFID enabled vehicle tags (number plates) A system and method for regulating the flow of traffic at a roadway intersection having one or more traffic signals by positioning a processor in the vicinity of the intersection to store cycle times of the traffic flow directions, mounting an RFID reader in the vic... | 07/07/2009 |
| 6937161 | Traffic signal control method In traffic signal control for setting a green light time to a value between the lower limit time and the upper limit time in real time depending on a traffic volume sensed by vehicle sensors Sa, Sb, and so forth, the upper limit time Gmax is set longer wi... | 08/30/2005 |
| 4370718 | Responsive traffic light control system and method based on conservation of aggregate momentum A system to improve traffic flow on all types of interconnected roadways, which reduces fuel consumption, emissions and trip times, is based on adaptive control of traffic signal timing. The parameters used to exercise this control are generated by sensin... | 01/25/1983 |
| 4303905 | Method and apparatus for calculating the green light time in traffic-dependently controllable street traffic signal systems A traffic-dependently controllable signaling system utilizing the lengths of the time intervals between two successive vehicles for terminating the green light duration for the involved flow of traffic, in which each time interval is compared with a first... | 12/01/1981 |
