Intelligent traffic control and warning system and method
US6317058A · kind A · utility
Inventors
Key dates
| Filing date | Sep 15, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | Sep 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/096783
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system and method for controlling traffic and traffic lights and selectively distributing warning messages to motorists is described. Traffic information is obtained from various traffic information units. The traffic information units have intelligent controllers. The traffic information is transmitted to at least one central controller. The central controller is used to determine congestion parameters and warning information. The congestion parameters and the warning information are transmitted from the central controller to the intelligent controllers. The intelligent controllers are used to determine appropriate action based on the congestion parameters and the warning information. Fuzzy logic is used to determine optimum traffic light phase split based on the traffic information from the traffic information units. The optimum traffic light phase split is determined for each of the intelligent controllers. Fuzzy logic controllers are used to execute fuzzy logic inference rules from a fuzzy rule base in determining the congestion parameters and the warning information and the appropriate action. Input variables and output variables are defined as members of fuzzy sets having d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.