Money owed when a shipper or receiver holds you past the free time.
Free time is usually two hours. After that detention accrues by the hour at a rate that should be on the rate confirmation.
The DOT Inspector General put detention's cost to for-hire truckload drivers at $1.1 to $1.3 billion a year in lost earnings. Most fleets charge it and fewer than half actually collect it, because collecting requires timestamped arrival and departure proof.
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Inteleri works out what a load actually pays you once things like this land. See how it works.