Traffic profiling and road conditions-based trip time computing system with localized and cooperative assessment
First Claim
1. A method for measuring traffic including:
- a) determining a current location of a vehicle from a gps receiver;
b) accessing a database to determine a current speed limit based upon the current location of the vehicle;
c) determining a current speed of the vehicle from the gps receiver or from a vehicle on-board diagnostic system;
d) comparing the current speed of the vehicle to the current speed limit;
e) receiving a natural language voice description of traffic from a user in the vehicle;
f) parsing the natural language voice description of traffic with a processor to estimate a traffic condition at the current location of the vehicle; and
g) determining a traffic condition including a traffic congestion event based upon said steps d) and f);
wherein said steps a-e) are performed on the vehicle.
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Accused Products
Abstract
This invention localizes traffic condition detection and classification to a vehicle. Vehicles work cooperatively to fuse their traffic condition assessments so as to produce larger geographical coverage and more reliable evidence of the conditions. The system can be executed on an onboard device which includes at least one of the following: GPS capabilities, connection connected to the vehicle to measure vehicle speed, or communication with a cell phone. In the example of the cell phone, speed can be computed from phone GPS, a GPRS/CDMA, or both. Otherwise, vehicle speed can be determined obtained from in-vehicle on-board diagnostic system (e.g. using the OBD-II protocol) or based on GPS and accelerometer readings.
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Citations
10 Claims
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1. A method for measuring traffic including:
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a) determining a current location of a vehicle from a gps receiver; b) accessing a database to determine a current speed limit based upon the current location of the vehicle; c) determining a current speed of the vehicle from the gps receiver or from a vehicle on-board diagnostic system; d) comparing the current speed of the vehicle to the current speed limit; e) receiving a natural language voice description of traffic from a user in the vehicle; f) parsing the natural language voice description of traffic with a processor to estimate a traffic condition at the current location of the vehicle; and g) determining a traffic condition including a traffic congestion event based upon said steps d) and f); wherein said steps a-e) are performed on the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification