Short answer: Because a commercial truck case is governed by federal safety regulations, involves multiple potentially liable companies rather than one driver, carries far more insurance, and rests on electronic evidence that the trucking company controls and is only required to keep for six months. A car wreck case is usually one driver, one policy, and a police report. A truck case is an investigation.
The other difference shows up on day one: the trucking company’s rapid response team is often at the scene before the injured person leaves the hospital.
This guide covers the legal and evidentiary side. For the physics of these collisions and the injuries they produce, see why 18 wheeler crash injuries are so severe.
Federal law applies, and it creates the liability theory
Interstate motor carriers operate under the Federal Motor Carrier Safety Regulations. Those rules create duties that ordinary drivers do not have, and a violation of one of them is frequently what turns a hard case into a clear one.
The rules that matter most in a crash case:
- Hours of service. A property carrying driver may drive a maximum of 11 hours after 10 consecutive hours off duty, within a 14 hour on duty window, and must take a 30 minute break after 8 cumulative hours of driving. Weekly limits are 60 hours in 7 days or 70 hours in 8 days.
- Electronic logging devices. Most carriers must record duty status electronically, which makes hours of service violations provable rather than debatable.
- Driver qualification. Carriers must verify licensing, review driving history, check employment history, and maintain a driver qualification file.
- Drug and alcohol testing. Post accident testing is required under defined circumstances, and a missed or delayed test is itself a fact.
- Inspection, repair, and maintenance. Carriers must systematically inspect and maintain equipment and keep the records that prove they did.
- Cargo securement. Improperly loaded or unsecured cargo shifts weight, extends stopping distance, and causes rollovers.
When a carrier violated one of these and a crash followed, the case stops being about whether a driver was careless in a moment and starts being about whether a company ran an unsafe operation.
The evidence disappears on a six month clock
This is the single most important practical difference. Under 49 CFR 395.8, motor carriers must retain records of duty status and supporting documents for six months. Not six years. Six months.
Other evidence goes faster:
- Electronic control module and event data recorder information on the tractor can be overwritten by continued driving or lost when the truck is repaired or sold
- Onboard and dash camera footage is often on a short retention cycle
- Telematics and GPS data may be purged on the vendor’s schedule
- Dispatch records, driver texts, and bills of lading get archived or destroyed
- The trailer, the cargo, and the tractor all go back into service
A properly drafted evidence preservation letter, sent within days and specifying every category of data by name, is what freezes this. A general request sent in month five does not. This is why waiting to call a lawyer costs more in a truck case than in any other kind of case.
There is rarely just one defendant
In a car wreck, you sue the driver. In a truck case, responsibility can attach to a chain of companies:
- The driver, for the negligent operation itself
- The motor carrier, both vicariously for its driver and directly for negligent hiring, training, supervision, retention, and for pressuring drivers past legal limits
- The trailer owner or lessor, when equipment is leased separately from the tractor
- The shipper or loader, when cargo was improperly loaded or the weight was misrepresented
- The freight broker, in some circumstances, for selecting an unsafe carrier
- The maintenance contractor, when a mechanical failure traces to bad service work
- A parts or component manufacturer, in a defect case
Each of those has its own insurance. Identifying all of them early is often worth more than any argument about damages.
The insurance is layered and much larger
Federal law requires interstate carriers hauling nonhazardous freight in vehicles over 10,000 pounds to carry at least $750,000 in coverage. Carriers hauling certain bulk hazardous materials must carry $5 million (49 CFR 387.9). Many large fleets carry far more through excess and umbrella layers stacked above a primary policy or a substantial self insured retention.
That changes the entire posture of the case. There is real money available, which means there is real defense spending. Expect experienced defense counsel, retained accident reconstructionists, biomechanical experts, and vocational experts, on a case that a car wreck adjuster would have closed in ninety days.
The other side starts investigating immediately
Major carriers and their insurers maintain rapid response protocols. Within hours of a serious crash, they can have an investigator, an adjuster, and sometimes an attorney at the scene, photographing final positions, downloading the truck’s electronic data, measuring skid marks, and interviewing witnesses.
None of that is improper. It is simply a head start. The injured person is in an ambulance while the other side is building a file.
The answer is not to complain about it. The answer is to get your own investigator and reconstructionist to the scene while it still exists, and to send the preservation letter before the truck is repaired.
Georgia, Tennessee, and Mississippi all sit on major freight corridors
I-75, I-85, I-20, I-285, I-40, I-24, I-55, I-59, and I-10 move an enormous volume of commercial traffic through the three states where we practice. The Atlanta metro is one of the busiest freight hubs in the country, Memphis is a national logistics center, and the Gulf Coast moves heavy industrial and port traffic. That concentration is why serious truck collisions in these states so often involve out of state carriers, out of state drivers, and questions about which court the case belongs in.
Those questions matter. Venue affects jury pools, timelines, and settlement values, and it is decided early.
What to do if a truck was involved in your crash
- Photograph the tractor and trailer, including the DOT number, company name, and license plates on both units
- Do not let your own vehicle be repaired or scrapped before it is inspected
- Get the names of every responding agency, since state patrol commercial vehicle units often produce a separate inspection report
- Get medical care immediately and consistently
- Say nothing to the carrier’s investigator or insurer
- Call a lawyer within days, not weeks, so the preservation letter goes out before the six month clock matters
Howe.Law handles 18 wheeler and commercial vehicle cases in Georgia, Tennessee, and Mississippi. Consultations are free and there is no fee unless we recover. Call (844) 876-4357 or contact us. You can also read more on our truck accident page.
Frequently Asked Questions
What is the black box in a semi truck and what does it record?
Heavy trucks contain an engine control module, and many also carry separate event data recorders and telematics units. Depending on the system, they capture road speed, engine RPM, throttle position, brake application, cruise control status, hard braking events, and fault codes in the moments before impact. That data is objective and it frequently settles disputes about speed and braking that would otherwise come down to competing witnesses.
How long does a trucking company have to keep the driver’s logs?
Federal rules require motor carriers to retain records of duty status and supporting documents for six months under 49 CFR 395.8. After that, a carrier may lawfully destroy them unless it has been placed on notice to preserve them, which is why an early preservation letter matters so much.
Can I sue the trucking company or only the driver?
Both, in most cases. A motor carrier is generally responsible for its driver’s negligence in the course of employment, and it can also be directly liable for negligent hiring, training, supervision, or retention, and for dispatch practices that pushed a driver past federal hours of service limits.
Does it matter that the driver was an independent contractor?
Often less than the carrier hopes. Federal leasing regulations and the carrier’s own operating authority can make it responsible for vehicles operating under its DOT number regardless of how the driver is classified on paper. Contractor labels are a defense argument, not an automatic bar.
How much insurance does an 18 wheeler carry?
Interstate carriers hauling nonhazardous freight in vehicles over 10,000 pounds must carry at least $750,000, and certain bulk hazardous materials require $5 million, under 49 CFR 387.9. Large fleets frequently carry substantially more through excess and umbrella layers.
This article is general information about federal motor carrier regulations and the law in Georgia, Tennessee, and Mississippi. It is not legal advice. Speak with a licensed attorney about your situation.
