Guides
A commercial truck accident claim, step by step, from the scene to renewal
A hypothetical composite walkthrough of a trucking accident claim: scene, notice, MCS-90, liability, physical damage, cargo, excess limits, subrogation and CSA.
This is a hypothetical composite. The trucking company, the driver, the injured family and every dollar figure are invented to show how a serious commercial auto claim unfolds; this is not a real case, and the amounts are not typical verdicts, settlements or premiums. Trucking policies mix standard ISO forms (the commercial auto and motor carrier coverage forms) with carrier-specific wording, so your policy may differ in the details.
A serious truck crash is not one claim. It is at least four: liability to the people the truck hit, physical damage to your own tractor, cargo loss owed to the shipper, and, if anyone on your side was hurt, workers' compensation. Each is paid by a different coverage with a different deductible, different adjuster and different clock. The liability claim is the one that can exceed your limits and change your business.
The business and the policy
Say a regional for-hire carrier runs eight tractors and 12 trailers hauling packaged food across several states under its own USDOT authority. Its program is:
- Auto liability $1 million combined single limit, with the Form MCS-90 endorsement attached.
- Physical damage on the tractors at actual cash value with a $2,500 deductible.
- Motor truck cargo $100,000, with a $2,500 deductible.
- A $4 million excess liability policy above the auto liability, see umbrella vs excess liability.
Timeline
| When | What happened | Who did what | Cost or amount |
|---|---|---|---|
| Day 0 | Tractor-trailer drifts over a lane line on a rural interstate and hits a minivan; driver of the van is critically injured | Driver calls 911 and dispatch; safety manager takes photos by phone and starts the accident register; post-accident drug and alcohol testing per federal rules | Tow and cleanup about $14,000 |
| Day 1 | Claim reported to the insurer and the broker; excess carrier given courtesy notice; litigation hold issued | Safety manager, broker | Reserves set; $1 million limit flagged |
| Day 2 | Insurer sends its own accident investigator; data from the engine control module, electronic logging device and dash camera preserved | Adjuster, reconstructionist, IT | Investigation cost is part of the insurer's expense |
| Day 5 | Shipper notified that 18 pallets were damaged | Dispatcher, cargo adjuster | Cargo claim $68,000 |
| Week 2 | Tractor declared a total loss | Physical damage adjuster | $85,000 actual cash value, less $2,500 deductible |
| Week 3 | Letter of representation from the injured driver's lawyers | Plaintiff's counsel | Medical bills already above $400,000 |
| Week 6 | Reservation of rights over the replacement tractor; MCS-90 raised | Insurer; broker | Coverage question open |
| Week 8 | Broker produces email showing the replacement unit was reported within 30 days | Broker | Reservation withdrawn |
| Month 4 | Lawsuit served; excess carrier is told the exposure may exceed $1 million | Defense counsel, both carriers | Defense costs outside limits |
| Month 11 | Discovery focuses on driver hours of service, hiring file and maintenance | Counsel for both sides | Spoliation fights avoided because data was preserved |
| Month 15 | Mediation | Mediator, three insurers' representatives | Settlement $3.4 million: $1 million primary, $2.4 million excess |
| Month 18 | Recovery from the brake shop that serviced the tractor | Insurer subrogation unit | $400,000 recovered |
| Month 20 | Renewal with large-loss surcharge | Broker, underwriter | Premium and terms change |
Step 1: the scene and the first 24 hours
The what to do after an accident in a company vehicle guide gives the full roadside list. For a carrier, three things matter more than anything else. First, the driver's safety and medical help, then no admissions of fault to anyone. Second, federal testing rules: after an accident with a fatality, or with a citation and either an injury treated away from the scene or a tow-away, the Motor Carrier Safety regulations require post-accident alcohol and controlled substance tests within set time windows. Missing the window is itself a violation, and plaintiffs' lawyers use it. Third, evidence. The engine control module, the electronic logging device, the dash camera and the driver's phone are all discoverable. The company should send a written litigation hold the same day. Destroying or losing that data can lead to sanctions and an instruction to the jury that it can assume the data was unfavorable.
Report quickly to the insurer and the broker. Also tell the excess carrier as early as the facts suggest a limits problem; excess policies have their own notice conditions.
Step 2: the four coverages
Liability pays what the company is legally obligated to pay for bodily injury and property damage to others, plus defense outside the limit under the standard business auto form. Physical damage pays for the company's own tractor under collision coverage, usually at actual cash value, less the deductible; see physical damage coverage for trucks and trailers. Cargo is separate under the motor truck cargo policy; federal law, the Carmack Amendment (49 U.S.C. 14706), generally makes a motor carrier liable to the shipper for the actual loss or damage to the goods it carries, subject to limited defenses and any valid limit in its contract. See motor truck cargo insurance: how it works and where it stops. Workers' compensation covers the driver's own injuries; the auto policy excludes employees' injuries.
Step 3: where the MCS-90 comes in
Federal regulations require for-hire interstate property carriers to show financial responsibility of at least $750,000 for non-hazardous freight, higher for oil and hazardous materials (49 CFR 387.9). The proof is typically the MCS-90 endorsement. See FMCSA insurance requirements and filings for motor carriers.
The endorsement is easy to misunderstand. It is not additional coverage for the trucker and it does not enlarge the policy's limits. It works like a surety bond for the public: if the policy otherwise would not respond, for example because the vehicle was not on the schedule or an exclusion applies, the insurer must still pay a final judgment to the injured third party, up to the federal minimum, and then may seek reimbursement from its own insured. The Tenth Circuit's en banc decision in Carolina Casualty v. Yeates (2009) is the usual citation for treating it as a surety-like obligation to the public rather than coverage for the insured. It does not apply to cargo or to damage to the carrier's own equipment. In this story the insurer raised a question about the replacement tractor. The MCS-90 meant the injured family was never at risk of the coverage dispute; for the company, the dispute meant a potential $750,000 reimbursement claim until the broker's records closed the issue. See The MCS-90 endorsement explained: what it guarantees and what it doesn't.
Step 4: the nuclear verdict risk
With a critical injury and a clear-liability crash involving a commercial truck, the exposure is the scenario underwriters call a nuclear verdict. Marathon Strategies counted 190 corporate verdicts of $10 million or more in 2025, over $25.6 billion in total, and trucking cases are a staple of the genre. See nuclear verdicts and social inflation: why liability costs keep rising and trucking verdicts and the cost of auto liability. What changes the number is rarely the crash itself. It is the story plaintiffs tell about the company: a driver who exceeded hours-of-service limits, a hiring file with a missed red flag, a skipped inspection, a deleted log. Here the discovery was clean because the data was preserved and the hiring file was complete, which is why the case settled in the low millions rather than going to a jury. Under a policy like this one, the excess carrier's consent was needed to settle above the primary limit.
Step 5: subrogation
The insurer's physical damage and liability payouts come with subrogation rights. In this case the investigator found that the brake shop had misadjusted the brakes a month earlier. The insurer recovered $400,000 from the shop's carrier, which reduced the net cost to the insurance tower and returned a share of the deductibles under the usual recovery pro rata practice. Tell the insurer before you sign any release with a vendor; a careless release can destroy the recovery.
Step 6: renewal and the CSA record
The loss is a large claim on the loss runs: what they are and how to request them, and underwriters will ask about the causes, driver changes and corrective actions. At the federal level, a DOT-recordable crash (one with a fatality, an injury requiring transport for medical treatment away from the scene, or a tow-away) is entered into the FMCSA Safety Measurement System and weighted by severity and age in the Crash Indicator BASIC. It affects the percentile ranking for 24 months. A carrier can ask the agency to review a crash it believes was not preventable through the Crash Preventability Determination Program, using DataQs; check the program's current criteria. See How CSA scores and safety ratings affect trucking insurance.
What this business did right and wrong
Right: it preserved the electronic data the same day, tested the driver on time, gave the excess carrier early notice, kept a complete driver qualification file and a clean maintenance record, and had the broker's email proving the replacement tractor was reported.
Wrong: it let a replacement tractor go onto the road with only an informal email as proof of coverage, ran a $1 million primary limit with a $4 million excess in an industry where seven-figure verdicts are common, let a lane-departure warning alert go unreviewed because nobody read the weekly telematics report, and had no written policy for dash camera retention.
Key takeaways
- A truck crash triggers four separate coverages; liability is the one that can outrun your limits.
- MCS-90 protects the injured public, not the trucker; the insurer pays and can bill you back if the policy would not have applied.
- Preserve electronic data and run federal post-accident tests on time, because plaintiffs will probe both.
- Give excess carriers early notice and know what your settlement consent conditions require.
- A large crash stays on the loss runs and on your CSA record; prepare a corrective-action story before renewal.