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| Number | Title | Issue Date |
| 6956471 | Hybrid tire inflation monitor The present invention provides a method, a computer usable medium including a program, and a system for monitoring inflation in a plurality of vehicle tires. The method and computer usable medium include the steps of determining a direct pressure in at least one pri... | 10/18/2005 |
| 6847307 | Traffic signal control system employing universal co-ordinated time (UTC) of GPS as time base 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 ... | 01/25/2005 |
| 5821878 | Coordinated two-dimensional progression traffic signal system A method of controlling traffic signals on existing grid-like systems of avenues and crossing streets. Two phase traffic signals, red and green, wherein both phases are equal in duration and the amber interval is a part of the green interval. The coordina... | 10/13/1998 |
| 5703778 | Traffic control method for relieving vehicle congestion on parallel roads A road traffic control method is provided which can continue to maximize the number of vehicles allowed to run on a road and shorten time required for a vehicle to reach a destination, by preventing and relieving congestion. The method controls traffic of... | 12/30/1997 |
| 5257194 | Highway traffic signal local controller A highway traffic control method is shown in which the control method (80) and phasing scheme (82) are defined and recall switches are set (84) every cycle of operation. In time-of-day control methods (FIGS. 14 and 15) timing parameters (86) also are defi... | 10/26/1993 |
| 4462031 | Traffic synchronization device A synchronization device for the control of an automobile traffic signal in synchronization with other traffic signals in the system. A present time clock in the device operates from the local alternating current power source. The synchronization device c... | 07/24/1984 |
| 4322801 | Method for controlling traffic flow An intersection control system is described which coordinates a plurality of intersections each of which is responsive to local requests for service. Traffic control coordination is accomplished between a plurality of intersections by providing for each i... | 03/30/1982 |
| 4257029 | Traffic control system A traffic control system which controls the timing of a plurality of traffic lights at a plurality of intersections with a variety of timing patterns, this invention contemplates utilizing modules which will operate automatically to control the flow of tr... | 03/17/1981 |
| 4250483 | System for signalized intersection control A coordinated traffic signal control system comprising a plurality of signalized intersections with controllers including coordination means to relate cycle timing between intersections without dedicated interconnecting communication channels. Coordinatio... | 02/10/1981 |
| 4061903 | Digital coordinator with smooth transition for offset changes An improvement in a digital coordinator of the type used for creating a background cycle defined by a series of control pulses repeatedly cycled between a first number, N1, and a second number, N2, with the time space between the N | 12/06/1977 |
| 4061902 | Digital traffic coordinator There is provided a coordinator for creating a desired background cycle time and controlled logic conditions on selected output circuits during the background cycle which cycle and logic conditions are used in governing the signalization of a traffic inte... | 12/06/1977 |
| 3967245 | Traffic signal control device with core memory A traffic signal control device for applying traffic signals for switching signals at a multiplicity of intersections. The traffic signal control device comprises a core memory in which a group of variable data such as steps, elapsed times, a group of fix... | 06/29/1976 |
