Patent Document ID: 9196098
Application ID: 14087967
Patent Flag: 1

Claim One:
1. A driving data recorder comprising an interface to an on-board diagnostic port of a vehicle; a processing unit comprising a processor; and a memory unit, wherein the driving data recorder is configured to: receive, through the interface, vehicle speed data corresponding to a vehicle's movement at regular periodic intervals; detect an excess speed event when the vehicle speed data passes over a predetermined speed limit; detect that time of day is after-sunset; detect that the vehicle is accelerating; determine, by the processing unit, that the excess speed event occurred both during the after-sunset time of day and during the acceleration of the vehicle; responsive to the determining that the excess speed event occurred both during the after-sunset time of day and during the acceleration of the vehicle, negatively adjust a safety rating associated with the vehicle of a driver based on a magnitude of the acceleration of the vehicle; and record, in the memory unit, the adjusted safety rating.