What to Do After a Truck Accident: Critical Steps for Serious Crashes

You can speak with experienced attorneys who have secured over $5 billion in negotiated settlements for injured clients by calling (314) 408-6136 for a free consultation with no fees unless we win your case. A collision with an 18-wheeler or commercial truck isn’t like a typical car accident. According to the FMCSA (2020), 71% of fatalities in large truck crashes are occupants of other vehicles—not the truck driver. The sheer size and weight of these vehicles cause catastrophic damage, and your actions in the first 72 hours after the crash can determine whether you receive fair compensation or get taken advantage of by trucking companies and their insurers.

Why Truck Accidents Require Immediate Action

Trucking companies deploy rapid response teams within hours to begin their own investigation. Federal regulations (49 CFR Part 395) only require trucking companies to retain electronic logging device data for six months, making immediate preservation essential for building your case. Evidence disappears quickly once crews clear the scene, and St. Louis’s heavy traffic on I-70 and I-64 means accident scenes get cleared rapidly, often within an hour.

The Critical 72-Hour Window

Your actions in the first 72 hours after a truck accident determine whether you receive fair compensation or get taken advantage of by insurers. This window is critical for seeking medical attention, documenting the scene, gathering witness information, preserving physical evidence, and protecting your legal rights. The steps you take during this period—or fail to take—will shape the entire course of your case and the compensation you ultimately receive.

Understanding Truck Accident Severity

Truck accidents differ fundamentally from typical car accidents. The size and weight disparity means catastrophic injuries are common. Understanding these differences helps you recognize why rapid response is essential and why truck accident cases require specialized legal representation familiar with federal trucking regulations.

Catastrophic Injury Patterns

According to the FMCSA (2020), 71% of fatalities in large truck crashes are occupants of other vehicles—not the truck driver. The sheer size and weight of commercial trucks cause catastrophic damage far exceeding typical motor vehicle accidents. Traumatic brain injuries, spinal cord damage, internal bleeding, and crush injuries are common in truck accidents, and many victims experience delayed symptom onset, appearing fine at the scene but experiencing serious complications hours later.

Aggressive Insurance Defense

Trucking companies and their insurers actively defend truck accident claims using teams of adjusters trained in minimizing payouts. According to FMCSA (2022), large truck crashes resulted in 1,097 occupant fatalities, a 9% increase from the previous year—insurance companies know these cases have high values and work quickly to minimize payouts before victims understand their rights. Adjusters contact victims within 24-48 hours, push for recorded statements, and offer quick settlements far below case value. Understanding their tactics helps you protect your rights.

Specialized Federal Regulations

Truck accidents involve federal regulatory frameworks not applicable to typical car accidents. Federal regulations (49 CFR Part 395) govern hours-of-service requirements, vehicle maintenance standards, and electronic logging devices. Federal law requires interstate commercial trucks to carry minimum insurance of $750,000, though many carry $1 million or more. Understanding these regulations is essential for proving driver fatigue, inadequate maintenance, hours-of-service violations, and other factors that contribute to truck accidents and support your claim for maximum compensation.

Missouri & Illinois Truck Accident Reporting Requirements

Missouri and Illinois have different requirements for reporting truck accidents. Understanding your jurisdiction’s specific legal obligations is essential for protecting your rights and ensuring proper documentation of your case.

Missouri Immediate Reporting Requirements

Under Missouri law (RSMo §300.110), you must notify police as soon as reasonably possible when an accident involves injury, death, or property damage exceeding $500. Call 911 immediately at the scene and report the accident to the responding officer. The police report becomes critical evidence for your case because officers will document the scene, interview witnesses, and may cite the truck driver for violations. This official record often becomes the foundation of your entire case.

Missouri Written Report Filing (If No Police Investigation)

If police do not investigate the scene, you must file a written report within 5 days with the Missouri State Highway Patrol or local police department when the accident involves injury, death, or property damage exceeding $500 (RSMo §300.115). Failure to properly report can jeopardize your legal rights. Complete reporting documentation ensures your claim is properly filed and preserves your right to pursue compensation.

Illinois Reporting Requirements

Illinois requires reporting within 10 days if the accident involves injury, death, or property damage exceeding $1,500, with reports filed with the Illinois Department of Transportation. Accidents occurring on the state border, such as those on the Poplar Street Bridge, fall under the jurisdiction where the impact occurred. Verify your accident location’s specific requirements to ensure proper compliance.

Hit-and-Run Reporting

Never leave the accident scene without proper documentation—doing so is a criminal offense under Missouri law (RSMo §577.060). If a truck driver leaves the scene, immediately call 911 and report a hit-and-run with any information you gathered—license plate, truck description, company name, or DOT number. Check for witnesses who may have additional information or dashcam footage. Your uninsured motorist coverage may apply in hit-and-run situations, and an attorney can help locate the driver through DOT records and commercial vehicle databases.

The 9 Critical Steps After a Truck Accident

Follow these nine essential steps in the critical period immediately following your truck accident to protect your health, preserve evidence, and maximize your legal claim.

Step 1: Ensure Safety and Call 911 Immediately

Your first priority after any truck accident is ensuring everyone’s safety. If you can move and it’s safe to do so, get yourself and your passengers away from traffic, turn on your hazard lights, and move to the shoulder or median. Many secondary accidents occur when disabled vehicles remain in traffic lanes, especially on busy corridors like I-70 through St. Louis. Call 911 immediately, even if injuries seem minor. Tell the dispatcher you’ve been in an accident with a commercial truck, provide your exact location, and report any injuries. Request both police and emergency medical services because under Missouri law (RSMo §300.110), you must notify police as soon as reasonably possible when an accident involves injury, death, or property damage exceeding $500.

Step 2: Seek Immediate Medical Attention—Even If You Feel Fine

Adrenaline masks serious injuries, and you might feel fine at the scene, but traumatic brain injuries, internal bleeding, and spinal damage often don’t show symptoms immediately. According to MoDOT (2024), Missouri saw over 125 CMV fatalities this year, with many victims initially walking away from crashes before collapsing hours later. This delayed onset of symptoms is why immediate medical evaluation is crucial. Go directly to the emergency room from the accident scene, or seek medical care within 72 hours maximum. St. Louis has several Level 1 trauma centers equipped to handle serious truck accident injuries, including Barnes-Jewish Hospital and SSM Health Saint Louis University Hospital, which specialize in trauma care. Mercy Hospital South also provides comprehensive emergency services for south county residents. Medical records create a crucial timeline linking your injuries to the truck accident, and insurance companies use any gap in treatment against you.

Step 3: Document Everything at the Accident Scene

If you’re physically able and it’s safe, document the scene before vehicles are moved because trucking companies often dispatch rapid response teams within hours to begin their own investigation. Your immediate documentation may be the only evidence of actual conditions at the crash scene. Use your cell phone to photograph everything from multiple angles. Capture all vehicle damage, focusing on impact points and debris patterns, the truck’s company name, DOT number, license plate, and any unit numbers on the cab. Document skid marks on the pavement—these help accident reconstruction experts determine speed and braking patterns. Take pictures of road conditions, weather, traffic signals, road signs, your visible injuries, torn clothing, and any cargo spilled from the truck. Record a video walkthrough of the entire scene if possible, narrating what you’re seeing, including traffic flow and witness locations.

Step 4: Gather Critical Information from All Parties

Exchange information with the truck driver, but keep interactions brief and factual. Never discuss fault or apologize—even saying “I’m sorry this happened” can be twisted against you later. Collect the driver’s full name, contact information, driver’s license number, and Commercial Driver’s License (CDL) number, along with the trucking company’s name, address, and phone number. Record the insurance company name and policy number as well. Document the truck’s license plate, registration, and the DOT number displayed on the vehicle because this federal identification number helps track the carrier’s safety record and insurance coverage. Federal law requires interstate commercial trucks to carry minimum insurance of $750,000, though many carry $1 million or more. Gather contact information from all witnesses before they leave, asking for names, phone numbers, and a brief statement about what they saw.

Step 5: Preserve Physical Evidence and Your Vehicle

Your damaged vehicle is critical evidence for accident reconstruction, so do not authorize repairs or allow your vehicle to be scrapped until an attorney can arrange for expert inspection. Store the vehicle in a secure location where it won’t be disturbed and take detailed photos of all damage before moving it. Keep all personal items from your vehicle, especially if they show impact damage, and preserve the clothing you wore during the accident, particularly if it shows blood or tears from injuries. These items help demonstrate the severity of impact and your injuries in ways that photographs alone cannot capture. Insurance companies often pressure you to settle quickly and dispose of your vehicle because they know that once physical evidence is gone, proving your case becomes much harder. Do not authorize any work yet since your attorney may need to have accident reconstruction experts examine your vehicle.

Step 6: Do NOT Talk to Insurance Companies Without Legal Representation

The trucking company’s insurance adjuster will likely contact you within 24-48 hours, but their goal isn’t to help you—it’s to minimize what their company pays. These adjusters are trained professionals who handle truck accident claims daily and know exactly what to say to get you to damage your own case. Insurance adjusters will push for a recorded statement, claiming they need it to “process your claim fairly,” but this statement will be analyzed word-by-word to find anything that reduces your claim value. They’ll ask for a medical release to access your entire medical history, looking for pre-existing conditions to blame for your injuries, and they’ll offer a quick settlement that seems generous but falls far below your case’s true value. When insurance companies call, provide only basic information: your name, contact information, and the date and location of the accident. Tell them you’re consulting with an attorney and will have your representative contact them, but do not give any recorded statement, sign any documents, or accept any settlement offers.

Step 7: Start a Detailed Accident Journal and Keep All Records

Begin a daily journal immediately after the accident to document your pain levels, symptoms, and how injuries affect your daily life. Record every medical appointment, treatment, and medication, noting activities you can no longer do—whether that’s playing with your children, exercising, or performing work duties. Include emotional impacts like anxiety, depression, or fear of driving because these non-economic damages are real and compensable. Keep an organized file of all accident-related documents, including medical records and bills, the police report (obtain a copy from the reporting agency), all photos and videos, witness statements, insurance correspondence, repair estimates, and lost wage documentation from your employer. Track every expense related to the accident, from prescription copays to transportation costs for medical appointments. This detailed documentation strengthens every aspect of your case because months or years later, when your case goes to settlement or trial, these contemporaneous records provide powerful evidence of your damages.

Step 8: Understand Missouri & Illinois Time Limits

Under Missouri law (RSMo §516.120), you have five years to file a personal injury lawsuit—not the two years many people mistakenly believe. However, some Missouri municipalities require notice of claims against government entities within 90 days, so always verify specific requirements for your accident location to protect your right to compensation. Failure to properly report can jeopardize your legal rights and potentially result in license suspension. For Illinois, statutes vary based on claim type and require consultation with an attorney familiar with Illinois personal injury law. Contact an attorney promptly to ensure you meet all deadlines in your jurisdiction.

Step 9: Contact a Truck Accident Attorney Immediately

Contact an experienced truck accident attorney as soon as possible after your accident, ideally within 24-48 hours, because trucking companies deploy rapid response teams to accident scenes and federal regulations only require certain records to be kept for limited periods. Electronic logging device data, crucial for proving hours-of-service violations, must only be retained for six months, making immediate action essential. An attorney can immediately send spoliation letters to preserve evidence, subpoena driver logs and maintenance records, and hire accident reconstruction experts while the evidence is fresh. They handle all insurance communications, protecting you from saying something that damages your case, and experienced attorneys calculate the true value of your claim, including future medical needs, lost earning capacity, and pain and suffering that initial offers ignore.

Common Causes of Truck Accidents in St. Louis

Understanding the most common causes of truck accidents helps you recognize contributing factors in your case and supports your attorney’s investigation. Many truck accidents result from driver negligence, regulatory violations, or inadequate vehicle maintenance—all factors that strengthen your claim for damages.

Driver Fatigue and Hours-of-Service Violations

Federal regulations (49 CFR Part 395) limit truck drivers to 11 hours of driving per 14-hour work day and require 10 consecutive hours off-duty. Many trucking companies pressure drivers to violate these limits or falsify electronic logging devices to meet delivery schedules. Fatigued drivers have impaired reaction times, reduced situational awareness, and increased risk of nodding off behind the wheel of a vehicle weighing up to 80,000 pounds. Your attorney can subpoena electronic logging device data to prove hours-of-service violations that contributed to your accident.

Inadequate Vehicle Maintenance

Trucking companies must maintain vehicles in safe operating condition, but many skip maintenance to maximize profits. Failed brakes, blown tires, steering problems, lighting failures, and coupling device failures are common causes of truck accidents. Federal regulations (49 CFR §396) require motor carriers to inspect and maintain vehicles, and violation documentation proves corporate negligence. Your attorney can subpoena maintenance records to prove the trucking company’s failure to maintain safe vehicles.

Improper Cargo Loading or Securement

Improperly loaded cargo can shift during transport, causing the truck to jackknife or roll, especially when braking suddenly or navigating curves. Overloaded trucks have longer stopping distances and less stability. Federal regulations (49 CFR Part 393) specify how cargo must be loaded and secured. Cargo spilling from trucks creates hazards for following vehicles. Your attorney can hire cargo experts to determine if improper loading contributed to your accident.

Speeding and Aggressive Driving

Large trucks require longer stopping distances—an 18-wheeler traveling at 55 mph needs approximately 300 feet to stop. Speeding reduces this critical margin even further. Some drivers speed to maintain schedules despite fatigue. Aggressive driving behaviors like tailgating, unsafe lane changes, and illegal passing increase crash risk, particularly dangerous at highway speeds with commercial vehicles. Accident reconstruction experts can determine speed through skid mark analysis and vehicle damage patterns.

Distracted Driving

Cell phone use, eating, adjusting GPS or entertainment systems, and other distractions take driver attention off the road for critical seconds. At highway speeds, a truck can travel the length of a football field while a driver is distracted. Trucking companies should have distraction policies, but enforcement is often lax. Cell phone records and evidence of phone use at the time of accident can prove distracted driving.

Impaired Driving (Alcohol and Drugs)

Federal regulations require alcohol testing within 2-8 hours and drug testing within 32 hours after certain accidents (49 CFR §382.303). Impaired drivers have reduced reaction time, impaired judgment, and compromised vehicle control—catastrophic when controlling an 80,000-pound vehicle. Some drivers use drugs to stay awake during long shifts. Testing results may not be immediately available, which is why avoiding early settlements is critical—test results often become available after initial settlement discussions.

Poor Weather and Road Hazards

While weather is not a party’s “fault,” drivers must adjust their speed and following distance based on road conditions. Trucks are particularly vulnerable to jackknifing on wet or icy roads, and reduced visibility from fog or heavy rain demands even greater caution. Drivers speeding in poor weather or following too closely are negligent regardless of weather conditions. Road debris, potholes, and construction hazards can also contribute to accidents if drivers don’t respond appropriately.

Comparative Fault & Compensation

How Comparative Fault Affects Your Compensation

Missouri follows a pure comparative fault system, meaning you can still recover damages even if you share some responsibility for the accident. Your compensation is reduced by your percentage of fault, so if you’re found 30% at fault, you can still recover 70% of your damages. Never admit fault at the scene—fault determination involves complex legal analysis, and an experienced attorney can help establish the trucking company’s greater responsibility and minimize your assigned fault percentage. Illinois has similar comparative fault rules, though specific thresholds may vary. Your attorney understands jurisdictional differences and can effectively argue against inflated fault assignments by the insurance company.

Types of Compensation in Truck Accident Cases

Economic Damages: These are quantifiable losses directly caused by the accident, including medical expenses (emergency care, hospitalization, surgery, ongoing treatment, rehabilitation, medications, medical equipment), lost wages from time off work, reduced earning capacity if injuries prevent you from working, property damage to your vehicle and personal belongings, transportation costs for medical appointments, and funeral expenses in wrongful death cases. Medical records and wage documentation support these damages.

Non-Economic Damages: These are subjective losses without direct monetary values, including pain and suffering from physical injuries, emotional distress and anxiety, depression and psychological trauma, loss of enjoyment of life if injuries limit your activities, loss of consortium if the accident affects your relationships, disfigurement or scarring, and fear of driving or PTSD following the accident. Your daily journal documenting pain levels and life impacts strengthens non-economic damage claims.

Punitive Damages: In cases involving gross negligence or intentional misconduct (such as a trucking company knowing a driver was impaired or a vehicle had failed brakes), Missouri law (RSMo Section 510.265) permits punitive damages to punish the defendant and deter similar conduct. Punitive damages are calculated separately from actual damages and are capped at the greater of $5,000 or five times the amount of actual damages. Punitive damages require proof of actual malice or deliberate or willful disregard for safety.

Calculating Your Full Compensation

Insurance companies offer initial settlements far below your case’s true value because they don’t want you to understand all available damages. An experienced truck accident attorney calculates damages comprehensively, including:

• Future medical needs based on your injuries
• Lost earning capacity over your working lifetime
• Home care or attendant care costs if injuries require long-term assistance
• Vocational rehabilitation or retraining costs if you cannot return to your prior occupation
• Pain and suffering for the duration of your expected lifetime

Months or years later, when your case goes to settlement or trial, these detailed calculations demonstrate your case’s true value and support demands for fair compensation.

Jurisdiction	Time Limit	Statute
Missouri	5 years	RSMo §516.120
Illinois	2 years	735 ILCS 5/13-202

Frequently Asked Questions About What to Do After a Truck Accident