STATIONARY STATE DETERMINATION, SPEED MEASUREMENTS

A standalone odometry device includes an accelerometer and/or gyroscope configured to be mounted on a wheel or axle of a vehicle. A controller in communication with the accelerometer and/or gyroscope is configured to receive data from the accelerometer and/or gyroscope. The controller processes the data to determine one or more of the speed, wheel rotation direction, accumulated distance travelled, stationary status, acceleration, deceleration, wheel diameter, and grade of surface on which the wheel is in contact.