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| Number | Title | Issue Date |
| 7025525 | Dynamic road marking system and road segment provided with said system A system for effecting merging of a first vehicle traveling in a first roadway with successive vehicles traveling in a second roadway, said system including: a sensor capable of detecting the movement of the successive vehicles in the second roadway; conversion mean... | 04/11/2006 |
| 6587779 | Traffic surveillance method and vehicle flow control in a road network In a method for monitoring and controlling traffic states in a road traffic system current or predicted traffic states are determined for one or more points and a distinction is made between the three types of traffic states: free-flowing traffic, slow-mo... | 07/01/2003 |
| 5646639 | Display device for vehicles A display producing a display image in a vehicle width mark form and an optical path changing device directing the display image to a windshield are mounted on a base. The base is driven by an arc drive portion along an arcuate path with an arc center whi... | 07/08/1997 |
| 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 |
