Method and system of utilizing satellites to transmit traffic congestion information to vehicles
First Claim
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1. A system for communicating traffic information to a mobile user, comprising:
- a traffic information station for aggregating and transmitting aggregated traffic information of segments of a road network;
an uplink communicator for transmitting said aggregated traffic information;
at least one satellite for receiving said aggregated traffic information from said uplink communicator and transmitting the received aggregated traffic information;
a receiver for receiving said transmitted aggregated traffic information from said at least one satellite;
a navigation system for receiving said transmitted aggregated traffic information, processing said traffic information and delivering to a driver interface to permit said mobile user to receive the navigation system for reporting traffic congestion information at said segments of said road network; and
a system for collecting traffic information in segments of a road network and wireless transmission of the traffic information, the system comprising;
a plurality of receiving station spaced apart along said segments of said road network for receiving measured speed and location information and transmitting the measured speed and location information to said traffic information station;
a tracking device installed on each of a plurality of probe vehicles for detecting and transmitting measured speed and location information for said each probe vehicle;
a transmitter coupled to said tracking device for transmitting said measured speed and location information to a respective one of said plurality of receiving stations of the traffic congestion existing at a particular location; and
wherein said traffic information station receives and stores said measured speed and location information from the receiving station.
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Abstract
A method and system for collecting and distributing vehicle traffic congestion information is disclosed. The method and system optionally involves deploying probe vehicles or other data sources for collecting and transmitting detailed traffic information which describes vehicle speeds actually being experienced along the routes of interest and transmitting all this information into a central computer at a central traffic data station, where the data are processed.
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Citations
21 Claims
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1. A system for communicating traffic information to a mobile user, comprising:
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a traffic information station for aggregating and transmitting aggregated traffic information of segments of a road network; an uplink communicator for transmitting said aggregated traffic information; at least one satellite for receiving said aggregated traffic information from said uplink communicator and transmitting the received aggregated traffic information; a receiver for receiving said transmitted aggregated traffic information from said at least one satellite; a navigation system for receiving said transmitted aggregated traffic information, processing said traffic information and delivering to a driver interface to permit said mobile user to receive the navigation system for reporting traffic congestion information at said segments of said road network; and a system for collecting traffic information in segments of a road network and wireless transmission of the traffic information, the system comprising; a plurality of receiving station spaced apart along said segments of said road network for receiving measured speed and location information and transmitting the measured speed and location information to said traffic information station; a tracking device installed on each of a plurality of probe vehicles for detecting and transmitting measured speed and location information for said each probe vehicle; a transmitter coupled to said tracking device for transmitting said measured speed and location information to a respective one of said plurality of receiving stations of the traffic congestion existing at a particular location; and wherein said traffic information station receives and stores said measured speed and location information from the receiving station. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for communicating traffic congestion information, comprising:
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a plurality of receiving stations spaced apart along segments of a road network; a tracking device installed on each of a plurality of probe vehicles which detects and transmits measured speed and location information for said each probe vehicle; a transmitter coupled to said tracking device which transmits said measured speed and location information to a respective one of said plurality of receiving stations of the traffic congestion existing at a particular location; and a central traffic congestion information station which receives and stores said measured speed and location information for the particular location of the receiving station. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of communicating traffic congestion information, comprising the steps of:
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transmitting locally measured traffic congestion information to a central traffic congestion information station via a receiving station; receiving aggregated traffic congestion information; processing said locally measured traffic congestion information and determining actual values and expected values of characteristic driving profile properties; comparing said actual values and said expected values of said characteristic driving profile properties and determining a difference between said actual values and said expected values; providing a memory including decision criteria; and transmitting said measured traffic congestion information to said central traffic station via said receiving station when said difference between said actual values and said expected values is determined to be a significant deviation from said expected values based on said decision criteria in said memory. - View Dependent Claims (16, 17)
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18. A system for communicating traffic congestion information, comprising:
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a plurality of receiving stations spaced apart along segments of a road; a tracking device installed on each of a plurality of probe vehicles which detects and transmits measured speed and location information for said each probe vehicle; a transmitter coupled to said tracking device which transmits said measured speed and location information to a respective one of said plurality of receiving stations; and a central traffic congestion information station which receives and stores said measured speed and location information from the receiving station. - View Dependent Claims (19, 20, 21)
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Specification