To detect harsh or risky driving behavior, Mentor leverages readings from the built-in accelerometer, combined with acceleration changes. Mentor’s “Harsh Acceleration” thresholds are based on industry best practice and field testing done by eDrivingSM. These thresholds are subject to change based on user experience, industry standards, and in-house research.
Mentor’s current “Harsh Acceleration” threshold is set at 0.41 g-force, or 9 mph/s / 14 km/h/s increase in speed.