To detect harsh or risky driving behavior, Mentor leverages readings from the built-in accelerometer, combined with acceleration changes. Mentor’s “Harsh Braking” 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 Braking” threshold is set at 0.41 g-force, or a 9 mph/s / 14 km/h/s decrease in speed.