Method of collecting traffic information, and system for performing the method
AssigneeU.S. Philips Corporation
InventorFrans Zijderhand
Life of this patent
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Abstract
Via a cellular radio communication system, measured values are transmitted from vehicles to a computer. The measured values are chosen so that they can be used to determine Origin-Destination matrices without infringing upon the privacy of the users.
Claims8
A method of collecting, processing and disseminating traffic flow information for a predefined geographic area serviced by a cellular radio system, said method comprising the steps of:
- a. transmitting, from a plurality of cellular-radio-equipped vehicles travelling in the predefined geographic area to a cellular radio receiver in the cellular radio system, position information periodically identifying the respective positions of said cellular-radio-equipped vehicles relative to predetermined reference positions in said predefined geographic area;
- b. processing the position information at a central processor in communication with the cellular radio receiver to produce an origin-destination matrix representative of the rates of travel of the cellular-radio-equipped vehicles along predefined route segments in the predefined geographic area;
- c. transmitting, from a cellular radio transmitter in communication with the central processor to the cellular-radio-equipped vehicles travelling in the predefined geographic area, traffic-flow-rate information derived from the origin-destination matrix.
A traffic information system for collecting, processing and disseminating traffic flow information for a predefined geographic area serviced by a cellular radio system, said traffic information system comprising:
- a. a cellular radio receiver for receiving, from a plurality of cellular-radio-equipped vehicles travelling in the predefined geographic area, position information periodically identifying the respective positions of said cellular-radio-equipped vehicles relative to predetermined reference positions in said predefined geographic area;
- b. a central processor in communication with the cellular radio receiver for processing the position information to produce an origin-destination matrix representative of the rates of travel of the cellular-radio-equipped vehicles along predefined route segments in the predefined geographic area;
- c. a cellular radio transmitter in communication with the central processor for transmitting, to the cellular-radio-equipped vehicles travelling in the predefined geographic area, traffic-flow-rate information derived from the origin-destination matrix.
Dependencies are inferred from the claim text.