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Traffic profiling and road conditions-based trip time computing system with localized and cooperative assessment
Traffic profiling and road conditions-based trip time computing system with localized and cooperative assessment
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机译:基于交通分析和路况的行程时间计算系统
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摘要
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. The onboard device compares the current speed limit with the current estimated speed of the vehicle and computes a traffic condition index based on the comparison. 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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