Dunno about other places, but in New Zealand commercial trucks mostly have voluntary GPS tracking/logging to estimate their road mileage for road levies. (IIRC

Dunno about other places, but in New Zealand commercial trucks mostly have voluntary GPS tracking/logging to estimate their road mileage for road levies. (IIRC because they can subtract mileage travelled on private roads, but the per-km rate might be lower too.) For most purposes though, a few linked to odometer reading, measured at mandatory "car health check-up" time and maybe amortised over the intervening period would be just fine, and require no new tech or tracking. Maybe tie it to insurance somehow?