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Non-trucking liability and bobtail insurance: what each covers
Bobtail and non-trucking liability insure a leased owner-operator's tractor when the carrier's policy does not. Where the gaps are and what the lease must say.
Bobtail and non-trucking liability (NTL) insurance are liability policies for an owner-operator's tractor when it is not working under the motor carrier's dispatch. The carrier's primary auto policy responds while the truck is in the carrier's service; bobtail or NTL fills the hours when it is not. Neither one covers damage to your own truck, the freight, or your own injuries, and the two names do not mean the same thing at every insurer, so the policy wording decides what you actually have.
Why the gap exists
An owner-operator who leases a tractor to a motor carrier is working under the carrier's operating authority. Federal truth-in-leasing rules in 49 CFR 376.12(c)(1) require the lease to give the carrier "exclusive possession, control, and use of the equipment for the duration of the lease" and to make the carrier assume "complete responsibility for the operation of the equipment." The carrier's primary liability policy, the one that carries the federal financial responsibility filing and the MCS-90, is built around that arrangement.
That arrangement has an edge. When you drive the tractor to the grocery store, to a family event or to a motel after a delivery with no next load, you are not hauling for the carrier. The carrier's insurer may say the loss falls outside its policy because the truck was not under dispatch. Your personal auto policy generally will not pick it up either, because it is not written for a commercial tractor. The accident then lands on you, with injury claims, a lawsuit and no insurer defending. Bobtail and NTL exist to close that hole.
The vocabulary, and why it causes trouble
Terms are used loosely in the trade. Treat this table as the common usage, then check each word against the policy you are quoted.
| Term | Common meaning | What to confirm |
|---|---|---|
| Bobtail | A tractor driven without a trailer | Some bobtail policies cover only the tractor with no trailer attached, and only when not under dispatch |
| Deadhead | Pulling an empty trailer, or running empty to the next pickup | Bobtail policies often exclude it; the carrier's policy usually responds if you are under dispatch |
| Non-trucking use (NTU, NTL) | Personal or off-duty use, with or without a trailer, away from the carrier's business | Whether the policy excludes any use "in any business" and how it defines dispatch |
| Under dispatch | Operating on the carrier's instructions or in its service | The lease and the policies each define it, and the definitions may not match |
The ISO form behind much of this market is endorsement CA 23 09, Motor Carriers: Insurance for Non-Trucking Use. A form summary at InsuranceXDate describes it as an endorsement to a business auto policy for owner-operators who lease their trucks and driving services to motor carriers. It covers the truck when it is used outside work performed under the carrier's dispatch, and the summary says it does not apply when the auto carries property in any business. It also changes the "who is an insured" wording so the leasing carrier is not an insured for non-trucking use. Many insurers use their own forms instead, which is where definitions drift. FreightWaves reported in March 2026 that some insurers cover bobtail trips regardless of dispatch status while others limit coverage when the driver is under dispatch.
What these policies pay for
Both are liability coverages. Under the standard structure they pay for bodily injury and property damage to other people that you are legally liable for, plus defense costs, up to a limit shown on the declarations. They do not usually cover:
- Your own tractor. Collision, fire and theft are physical damage coverages. See physical damage coverage for trucks and trailers.
- Cargo. Freight in your care needs motor truck cargo coverage, and in a lease the carrier's cargo policy may not respond to you at all.
- Your own injuries. Workers' compensation, if the state requires it, or occupational accident insurance. Whether an owner-operator is an employee or an independent contractor is a state-law question covered in independent contractors and workers' comp: the misclassification risk.
- The carrier. Under the
CA 23 09structure, the motor carrier is not an insured for non-trucking use, so a claim against the carrier stays with the carrier's insurer. - Business use. Hauling anything for pay, or running under dispatch, is outside these forms. That boundary is where claims get contested.
What the lease must say about insurance
Truth-in-leasing rules force the insurance terms onto paper. Under 49 CFR 376.12(j), the lease must:
- Clearly state the carrier's legal obligation to maintain insurance for the protection of the public under FMCSA regulations.
- Specify who is responsible for any other insurance for the leased equipment, "such as bobtail insurance."
- State the amount of any charge-back to you for insurance the carrier buys on your behalf.
- If you buy insurance through the carrier, promise a copy of each policy on request and a certificate showing the insurer, policy number, dates, coverages, the cost to you for each coverage and the deductible for which you may be liable.
- State the conditions under which cargo or property damage can be deducted from your settlements, and require a written itemization before any deduction is made.
A lease that is silent on bobtail is a warning. Ask who carries it, and get the answer in writing before the first load.
A hypothetical Friday afternoon
Say an owner-operator is leased to a regional carrier. He delivers on Friday at 3 p.m., the dispatcher has nothing for him until Monday, and he drives the tractor, with no trailer, 40 miles home. A car pulls out in front of him and a passenger is badly hurt.
Three outcomes are possible, and the facts decide which one applies:
- If the lease says the equipment is in the carrier's service until released, and the carrier's policy treats the tractor as a covered auto during the lease, the carrier's insurer may respond, subject to its own conditions.
- If the dispatcher released him and the trip home was personal, a non-trucking policy written on
CA 23 09-type wording is the likelier source of coverage. - If neither insurer accepts the claim, the injured person's lawyer will look at the carrier, the owner-operator and any MCS-90 obligation, and the owner-operator can end up funding a defense while the insurers argue. Disputes over which policy is primary turn on the other-insurance wording in each policy (other insurance clause).
The fix is not legal strategy after the accident. It is the lease and policies, read together, before it.
Choosing coverage
Match the coverage to the arrangement:
- Leased to a carrier. You usually need bobtail or NTL, and many carriers require one or both in the lease. Read the carrier's policy language for dispatch status, ask for a certificate, and make sure the name, VIN and policy dates are right. The certificate should name the coverage, not just the insurer.
- Running under your own authority. NTL does not help. You need full primary auto liability meeting the federal minimums in FMCSA insurance requirements and filings for motor carriers, plus the filings and cargo your brokers require. owner-operator insurance: leased vs independent authority compares the two models.
- Both at once. Some owners lease one truck and run another independently. Each needs its own coverage and its own driver list.
Before you buy, ask each insurer these questions in writing:
- Does the policy apply with a trailer attached when I am not under dispatch?
- How does it define "under dispatch" and "business use," and does it match my lease?
- Who is the named insured, and is the carrier an additional insured?
- Is there a deductible, a minimum driver age or experience requirement, or a radius limit?
- What happens if I run for a different carrier or take a load on my own?
Where claims go wrong
The same few mistakes appear again and again. A driver is "waiting for a load" at a truck stop and the carrier's insurer calls it personal use. A driver hauls a trailer home to avoid a drop fee, and the NTL excludes it because property was being carried. A lease ends but the carrier's placards stay on the door, and an accident happens before anyone sorts out whose truck it is. The policy lapses for non-payment and nobody notices because the carrier only asked for a certificate once. And a driver other than the owner is behind the wheel without being listed.
Get the facts straight early. Report the accident to every potentially responsive insurer, including the carrier, and keep the dispatch records, trip logs and messages that show where the truck was and why. Late notice can create a problem that has nothing to do with fault; see notice of claim and late notice: why timing matters.
Key takeaways
- Bobtail and non-trucking liability insure a leased owner-operator's tractor when it is not working in the carrier's service; the carrier's primary policy covers the truck during dispatch.
- The names overlap and vary by insurer. Read how the policy defines dispatch, business use and trailers, and compare it with the lease.
- Under 49 CFR 376.12(j), the lease must state who provides bobtail-type insurance, what charge-backs apply, and what policy documents the carrier owes you.
- These are liability-only coverages: you still need physical damage on the tractor, cargo coverage where contracts require it, and workers' comp or occupational accident protection for yourself.
- If you run under your own authority, NTL is the wrong product; you need full primary liability and the federal filings.