Patent ID: 9679422
Date: 2017-06-13
CPC Classifications: G07C

Claim:
1. A method of accurately calculating one or more new vehicle parameters using a vehicle parameter obtained from a vehicle bus for vehicle and driving evaluation comprising: a. obtaining vehicle speed from a J1708, J1939, OBD, OBDII, OBDIII or CAN vehicle bus using a device communicating with the bus; b. obtaining an engine RPM from said vehicle bus with said device; c. developing and using one or more equations where the equations incorporate vehicle speed and engine RPM wherein said equation(s) resolve the value of a vehicle speed using an engine RPM; d. using said equations with said device to calculate a new resolved vehicle speed and its derivative(s); e. providing functionality to make the resolved value of the vehicle speed and/or its derivative(s) operationally available through said device.