Bobtail Insurance

Bobtail insurance provides liability coverage for a truck driver who is operating a tractor without a trailer attached ("bobtailing") and, critically, not under a motor carrier's dispatch. When an owner-operator is hauling a load under a carrier's operating authority, that carrier's commercial auto liability policy typically responds. But the moment the driver drops the trailer and heads home, to a repair shop, or back to pick up the next load on their own time, the carrier's coverage stops applying — leaving a dangerous gap. Bobtail coverage steps in to pay for bodily injury and property damage the driver causes to others during those non-dispatched, trailer-free movements.

This matters to a small trucking business because owner-operators leased to a carrier are personally exposed during any driving they do outside an active load. A carrier lease and the required federal filings (such as the MCS-90 endorsement) cover the public while freight is being hauled under authority, not while the tractor is running empty on personal errands. Lenders and carriers routinely require bobtail (and its close cousin) as a condition of the lease. Note the important distinction: bobtail liability applies only when no trailer is attached, whereas non-trucking liability (NTL) is broader — it responds when the truck is used for non-business purposes whether or not a trailer is connected, so long as the driver is not under dispatch. The two are frequently confused and sometimes bundled, but NTL is the more complete "not working" coverage.

A practical nuance: bobtail and NTL are liability-only — they pay for damage to others, not for physical damage to the tractor itself (that requires collision/comprehensive) and not for the cargo (see cargo insurance). Coverage also hinges on the definition of "dispatch," which can create gray areas — for instance, a driver bobtailing to a terminal to pick up an assigned load may or may not be considered "under dispatch" depending on policy language and the lease. Owner-operators running under their own MC authority generally do not need bobtail because their primary auto liability already covers all their operations; the coverage exists specifically to solve the leased-driver gap. Always read the policy's dispatch trigger carefully so you understand exactly when protection turns on and off.