Bobtail and non-trucking liability are not the same thing, and the difference is the claim.
Non-trucking liability covers the tractor when it is driven outside dispatch. The motor carrier’s primary liability generally responds only under dispatch, and the gap is exactly when an owner-operator is driving on their own time.
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Your current policy paperwork, a renewal notice, or nothing at all. A licensed agent reads it and replies the same business day.
What bobtail and non-trucking liability actually covers.
Off-dispatch use
Liability while the truck is driven for personal reasons: home from the terminal, out to the shop, to get food.
Without it — The carrier’s policy declines because you were not under dispatch, and your personal auto policy declines because it is a commercial vehicle.
Bobtail, strictly
Driving the tractor without a trailer attached, whether or not you are under dispatch.
Without it — The narrower reading of an old bobtail form can leave a loaded, off-dispatch trip uncovered even though a bobtail trip would have been.
Owner-operator gap coverage
The line that exists because a leased owner-operator sits under someone else’s authority and someone else’s primary liability.
Without it — The lease requires you to carry it, and most carriers will not let you haul until you show the certificate.
Where bobtail and non-trucking liability shows up.
- Trucking
Primary liability generally stops the moment you are off dispatch, which is precisely when an owner-operator is driving home.
- Hot Shot Trucking
Primary liability stops off dispatch, which is most of the driving a hot shot operator does between loads.
- Local & Short-Haul Trucking
Off-dispatch driving is excluded by primary liability at any radius.
- Regional & Intermediate Radius
Off-dispatch exposure grows as drivers spend nights away.
- Long Haul Trucking
Owner-operators driving off dispatch are uninsured by the primary policy at exactly that moment.
- Single Truck & Owner-Operator
Primary liability stops off dispatch, and an owner-operator drives off dispatch constantly.
- Fleet
Owner-operators inside the fleet drive off dispatch, where primary liability stops.
- Commercial truck
For a leased-on owner-operator, the gap between dispatch loads when the motor carrier’s policy is not covering you.
Lori Adams, TRS
Commercial Trucking Insurance Advisor
Twenty-five years in trucking insurance. Knows the filings, the radius rules and the carriers that will actually take the risk.
Transportation Risk Specialist (TRS)
What clients with bobtail and non-trucking liability ask us.
What is the actual difference between bobtail and non-trucking liability?
Bobtail is about the trailer; non-trucking liability is about the dispatch. Bobtail coverage responds when you are driving the tractor with no trailer attached. Non-trucking liability responds when you are driving outside of dispatch, trailer or no trailer. The trade uses the words interchangeably and the policies do not, which is how a driver ends up uninsured while believing otherwise — a loaded trailer being returned after the load was delivered is off dispatch but not bobtail. Read which one the form actually says.
I am leased to a carrier. Do I still need this?
Yes, and your lease almost certainly requires it. The carrier’s primary liability covers you while you are working for them. The moment you are not — evenings, weekends, the drive home — that policy is not answering, and you are driving an eighty-thousand-pound vehicle with no liability coverage behind it.
Does it cover the load or the truck?
Neither. It is liability only, the harm you do to other people and their property. Damage to your own truck is auto physical damage, and freight is motor truck cargo. Non-trucking liability is deliberately narrow, which is why it is cheap.
My carrier charges me for bobtail insurance through the settlement. Is that allowed?
Yes, if the lease says so in numbers. Federal leasing rules (49 CFR §376.12(j)) require the lease to state who provides each coverage, and where the carrier charges you back for insurance it must name the amount and the deductible for each coverage — the regulation gives bobtail insurance as its own example. What is not allowed is a charge the lease never itemized, or a charge for coverage you do not actually have. FMCSA’s Truck Leasing Task Force reported to Congress in January 2025 that carriers "may overcharge drivers for insurance coverage and/or mislead drivers about the level of insurance coverage on a vehicle", so ask for the certificate and the policy, and compare the charge to what the same coverage costs on your own.
Is it about whether a trailer is attached, or whether I am working?
Working. The standard non-trucking endorsement excludes the truck while it is used to carry property in any business, or in the business of the carrier you are leased to, trailer or no trailer. Bobtail is what the trade calls it and the trailer is what people picture, but the form turns on whose business the truck is serving at the moment of the accident. An empty tractor heading to pick up the next dispatched load is working; the same empty tractor driving home is not.
Commercial insurance is 96% of what we do — it is not a department here, it is the whole business. Not ready to talk? The guides answer the questions this page raises in more depth. Already insured with us and need a certificate or a policy change? Ask the service team rather than starting a quote — it is faster and it goes to the people whose job it is. We also write home and auto, which is usually cheaper alongside the business policy than apart from it.
Handed a lease, a vendor packet or a client contract with insurance requirements? Paste it into the COI Requirements Decoder to see what each one means for your business, or read what the requirements mean.