Updated October 2026 · Fleet Genius

Where Driver Behavior Data Comes From

Modern systems fuse three data streams: accelerometer (harsh events), GPS (speed and location), and forward/inward-facing cameras (visual context). The accelerometer catches the event; GPS tells you where and how fast; the camera shows why — a cut-off vehicle, a pedestrian, or a phone in hand.

Event Types & Thresholds

EventTypical ThresholdSeverity Weight
Hard brake≥ 8 mph/s decelerationHigh
Rapid acceleration≥ 8 mph/s accelerationMedium
Sharp cornering≥ 0.4 g lateral forceMedium
Speeding (posted)≥ 10 mph over limitHigh
Phone useAI camera detectionCritical
DrowsinessEye-closure detectionCritical

Balancing Safety & Privacy

Inward-facing cameras are effective but controversial. Best practice: use event-triggered recording (not continuous), limit access to safety managers, publish a clear driver-facing policy, and involve drivers in programme design. Fleets that position the programme as protective — not punitive — see 3× higher adoption.

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