The TV lawyer running Hattiesburg television spots has a secretary who handles files. She has never seen an underride guard failure report, never read a FMCSR rear impact guard compliance standard, and never walked a family through what an underride crash actually does to the occupants of a passenger car. An underride accident is among the most devastating events on any highway. When a passenger vehicle slides under the trailer of a tractor-trailer, the trailer frame strikes the vehicle at windshield height. The result is catastrophic head and neck injuries or death, regardless of what the passenger vehicle’s own safety systems are rated to handle. If you need a Hattiesburg underride truck accident lawyer, you are dealing with a crash that was foreseeable, preventable, and in many cases the direct result of a regulatory failure the carrier chose to ignore.

MS Code Section 11-7-15 puts comparative fault on the table in every claim. Underride defense teams argue that the passenger car was following too closely, traveling too fast, or failed to maintain adequate stopping distance. MS Code Section 15-1-49 sets the three-year personal injury limitations period. The rear impact guard inspection records, the guard compliance documentation, and any electronic data from the trailer have short retention windows. Preservation demands must go out immediately.

This page is part of the Hattiesburg truck accident lawyer resource hub. Everything here is specific to underride truck crashes on roads in and around Hattiesburg.

What An Underride Accident Is And Why Federal Standards Have Failed To Prevent Them

Federal Motor Carrier Safety Regulations require rear impact guards on trailers – the metal bar hanging from the back of the trailer that is supposed to stop a passenger vehicle from sliding underneath. The problem is that the federal standard governing those guards, FMCSR Section 393.86, sets minimum requirements that safety researchers have demonstrated are inadequate to protect occupants in real-world crash conditions. Guards that pass federal inspection can fail in crashes at speeds and angles that are routine on American highways.

Beyond the regulatory gap, many carriers run trailers with guards that are bent, cracked, corroded, or improperly mounted – technically non-compliant with even the inadequate federal standard. A guard that fails on inspection is a guard the carrier knew was dangerous and chose not to replace. That is not a regulatory violation. That is a decision with consequences.

The Mississippi underride truck accident lawyer page on this site covers the statewide legal framework for underride claims. What is on this page is specific to Hattiesburg and the highway network where underride crashes produce the worst outcomes.

Side Underride And Rear Underride: Two Different Crashes, Same Carrier Liability

Rear underride happens when a passenger vehicle strikes the back of a trailer and slides underneath. Side underride happens when a passenger vehicle strikes the side of a trailer – typically when a truck makes a turn across traffic or when a trailer is parked or stopped on a roadway without adequate lighting or reflectors. Federal regulations require side underride protection on some trailers but not all. The regulatory gap on side underride is even wider than on rear underride.

Both types of underride crashes are litigated on the same negligence framework: the carrier failed to maintain proper safety equipment, failed to operate the vehicle in a manner that prevented the crash, or both. Identifying which type of underride crash occurred and which regulatory standards apply is the first step in building the liability case.

The resources page for MS injury victims on this site covers documentation priorities after a serious commercial vehicle crash. My No Fee Guarantee applies to every underride case I take: no recovery, no fee.

The Evidence That Builds An Underride Case

The rear impact guard itself is the primary piece of evidence in a rear underride case. Its physical condition, its mounting hardware, its compliance with FMCSR Section 393.86, and its inspection history are all critical. Pre-trip inspection records show whether the driver was aware of any guard damage before the run. Maintenance records show when the guard was last inspected, repaired, or replaced. For side underride crashes, trailer lighting and reflector inspection records, the driver’s lighting check documentation, and any dashcam footage of the trailer’s position on the road at the time of the crash are foundational.

An independent vehicle safety expert can evaluate the guard against current safety research and demonstrate that even a compliant guard was inadequate for the crash conditions. That expert testimony is the difference between a regulatory violation case and a product defect or institutional negligence case with significantly higher damages exposure for the carrier.

The Federal Motor Carrier Safety Administration maintains publicly available inspection records for registered carriers including prior rear impact guard violations and out-of-service orders. A carrier with a pattern of guard violations has constructive knowledge of the danger and a punitive damages exposure that goes beyond the individual crash.

MS Statutes Governing Hattiesburg Underride Truck Accident Claims

MS Code Section 11-7-15 governs comparative fault. Underride defense teams focus their comparative fault argument on following distance and reaction time – arguing that the passenger car driver was too close to the trailer to stop in time. MS Code Section 15-1-49 sets the three-year personal injury limitations period. MS Code Section 11-46-11 covers claims against governmental entities where road conditions or lighting failures contributed to the crash.

The eggshell plaintiff doctrine applies in underride cases with particular force because the injuries are almost always catastrophic and frequently involve traumatic brain injury, severe facial trauma, and spinal cord damage. If a prior condition was aggravated by this crash, the carrier cannot use that history to limit their liability for what this crash actually caused. They take you as they find you under MS law.

Why An Underride Case Cannot Be Handled By A Volume Firm

Underride cases require vehicle safety experts, regulatory analysis, and a lawyer who can present that evidence to a Forrest County jury in a way that produces a verdict that reflects the severity of what happened. The TV lawyer’s secretary is not retaining a vehicle safety engineer. She is reading the crash report and calculating the demand. The carrier’s defense team knows that and prices their offers accordingly.

No MS judge has ever seen the TV lawyer walk into a courtroom. In an underride case with catastrophic injuries and high damages exposure, that fact matters more than in any other type of truck accident case. The carrier’s willingness to pay a fair number is directly proportional to their belief that your lawyer will take them to trial. The TV lawyer does not create that belief.

What is an underride truck accident?

An underride accident happens when a passenger vehicle slides under the frame of a tractor-trailer during a crash. In a rear underride, the passenger vehicle strikes the back of the trailer and its roof is sheared off by the trailer frame. In a side underride, the vehicle goes under the trailer’s side skirt during a turn or while the trailer is stopped on a roadway. Both types produce catastrophic injuries because the trailer frame strikes occupants at head and chest height, well above the crumple zones and airbag protection a passenger vehicle is designed to provide.

Are trucking companies required to have underride guards?

Federal Motor Carrier Safety Regulations Section 393.86 requires rear impact guards on most trailers. However, the federal standard sets minimum requirements that safety researchers have found are insufficient to protect occupants in many real-world crash scenarios. Guards that pass federal inspection can still fail in crashes at common highway speeds and angles. Additionally, many carriers run trailers with guards that are damaged, corroded, or improperly mounted – non-compliant with even the inadequate federal standard.

How long do I have to file an underride truck accident lawsuit in Mississippi?

MS Code Section 15-1-49 gives you three years from the date of the crash to file a personal injury lawsuit. However, the rear impact guard itself, its inspection records, and the carrier’s maintenance documentation all need to be preserved immediately. The guard may be repaired or replaced before you ever get access to it if a preservation demand does not go to the carrier within days of the crash.

Can I sue the trailer manufacturer if the underride guard failed?

Potentially yes. If the guard design itself was defective – not just improperly maintained – a product liability claim against the trailer manufacturer may be available alongside the negligence claim against the carrier. That analysis requires a vehicle safety expert to evaluate the guard design against current safety standards and crash test data. Identifying the product liability angle early expands the defendant pool and the available insurance coverage.

Does comparative fault apply in underride truck accident cases in Mississippi?

Yes. MS Code Section 11-7-15 applies pure comparative fault to every personal injury claim. Underride defense teams focus comparative fault arguments on following distance and reaction time, arguing that the passenger car driver was too close or traveling too fast to stop in time. Dashcam footage from your vehicle, electronic data from both vehicles, and independent reconstruction testimony are the primary tools for countering those arguments.

P.S. The carrier whose trailer was involved in this crash has already had the guard inspected and documented by their own team. If it was non-compliant, they know it. If it was compliant on paper but inadequate in practice, their expert will say it was fine. The TV lawyer’s secretary is not equipped to fight that. Get the FREE book first. What you understand about this process before you hire anyone is the one thing they cannot take back.