Methods, Apparatuses and Systems for the Reporting of Roadway Speed and Incident Data and the Constructing of Speed Map Database
First Claim
1. A method and system architecture for the construction on a network server of an speed map database with real-time roadway speed information, where the system comprising A plurality of personal and mobile reporting devices, car-mounted or carried by a person, measuring location and/or speed information and reporting to network server;
- The use of general purpose wireless wide area network communication channels for sending speed reports and for receiving roadway speed data;
A server which receives speed reports from the said plurality of reporting devices and maintains a dynamic speed map database with close to real-time roadway speed data to serve the needs of informational, traffic, navigational and related services.
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Abstract
A method and architecture for constructing, updating, and maintaining a map database extended with real-time roadway speed data is described. The method and system include a plurality of mobile reporting devices, communication channels, and servers that receive the speed and incident reports and maintain an extended map database. The extended map database is a spatial database with extended speed attributes. The reporting devices or the server use map-assisted filtering and gyro history comparison to ensure a reported speed is snapped to a valid road segment and with sufficient accuracy.
81 Citations
13 Claims
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1. A method and system architecture for the construction on a network server of an speed map database with real-time roadway speed information, where the system comprising
A plurality of personal and mobile reporting devices, car-mounted or carried by a person, measuring location and/or speed information and reporting to network server; -
The use of general purpose wireless wide area network communication channels for sending speed reports and for receiving roadway speed data;
A server which receives speed reports from the said plurality of reporting devices and maintains a dynamic speed map database with close to real-time roadway speed data to serve the needs of informational, traffic, navigational and related services. - View Dependent Claims (2, 3, 4, 5)
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6. A roadway speed reporting device that is implemented by augmenting a GPS navigational device and/or personal communication device, as exemplified in
FIG. 2, 3 , 4.A and 4.B, which measures locations (when capable), estimates speed (when capable), filters speed reports and sends speed reports to the server, and receives speed and traffic data from the server.
Specification