Truck accidents are not like car accidents. The vehicles are bigger, the damage is worse, and the web of responsibility runs deeper than most people realize. When an 80,000-pound commercial truck collides with a passenger vehicle, the aftermath is catastrophic — but the causes rarely come down to a single moment of bad luck.

What we find, time and again, is that these crashes were preventable. Behind nearly every serious truck accident is a chain of decisions: a driver pushed past his limits, a company that skipped maintenance to cut costs, a dispatcher who knew the risks and sent the truck anyway. The wreckage on the road is the visible part. The real story lives in records, data, and documents that most victims never know to ask for.

At Marko Law, we have handled truck accident cases across Michigan and beyond. We know where the evidence lives, how fast it disappears, and what it takes to build a case that holds carriers and their insurers accountable. Here is what our investigations typically uncover.

The Black Box (ECM/EDR) Data

What the Truck's Computer Records

Every modern commercial truck is equipped with an Electronic Control Module (ECM) or Event Data Recorder (EDR), commonly called the black box. This device captures a continuous stream of operational data, including:

• Vehicle speed in the seconds before impact
• Brake application timing and force
• Throttle position and engine RPM
• Gear shifts and cruise control status
• Seat belt use

Why You Have to Move Fast

Here is the problem: trucking companies have access to this data too, and they move quickly after an accident. ECM data can be overwritten by normal vehicle operation within days. Some carriers have been known to conveniently service a truck shortly after a crash, wiping the data in the process.

A preservation letter, also called a spoliation letter, must go out immediately after an accident to put the carrier on legal notice to preserve all evidence. If they destroy it after receiving that letter, that becomes powerful evidence of its own.

Driver Logs and Hours of Service Records

Federal Rules and Why They Exist

The Federal Motor Carrier Safety Administration (FMCSA) limits how many hours a commercial driver can operate without rest. These Hours of Service (HOS) rules exist because fatigued driving is one of the leading causes of serious truck accidents. A driver who has been behind the wheel for 14 straight hours is a danger to everyone on the road.

What the Records Reveal

Drivers are required to maintain logs of their on-duty and driving time. Since 2019, most carriers are required to use Electronic Logging Devices (ELDs) that automatically track hours. What we look for includes:

• Gaps or inconsistencies between the ELD data and paper logs
• Off-duty periods that are too short to constitute real rest
• Driving time that exceeds the legal maximums
• Evidence that a driver was running under a second identity or a second log

Maintenance and Inspection Records

What the Law Requires

FMCSA regulations require trucking companies to maintain detailed records of vehicle inspections, repairs, and maintenance history. Drivers are also required to complete pre-trip and post-trip inspection reports. These records paint a clear picture of how seriously a company takes vehicle safety.

What We Find

When carriers cut corners, the maintenance records show it. Common findings include:

• Brake deficiencies that were flagged and never repaired
• Tire wear beyond legal limits
• Deferred repairs to lights, steering components, or coupling systems
• Inspection reports that were signed off without the actual inspection being completed

Driver Qualification Files

What Carriers Are Required to Keep

Federal law requires trucking companies to maintain a qualification file for every driver they employ. That file must include:

• A valid Commercial Driver's License (CDL)
• Current medical certification from a DOT-approved examiner
• Motor Vehicle Record (MVR) history
• Drug and alcohol testing records
• Documentation of training and prior employment verification

Red Flags We Look For

Carriers are responsible for who they put behind the wheel. When we pull a driver's qualification file and find prior DUI convictions, a history of serious traffic violations, a lapsed medical certificate, or incomplete training records, the question becomes: why did this company hire or retain this driver?

Negligent hiring and negligent retention are legal theories that can significantly expand a case. If the carrier ignored obvious warning signs, they share in the responsibility for what happened.

Cargo Loading and Weight Distribution

Federal Standards for Loading

Federal regulations set strict standards for how cargo must be secured, distributed, and documented. Every load is supposed to have a manifest. Every shipment is supposed to meet weight limits for the specific vehicle and axle configuration.

When Loading Goes Wrong

Improperly loaded or overweight trucks behave unpredictably. The handling characteristics change, stopping distances increase, and the risk of a rollover or jackknife multiplies. We investigate:

• Whether the cargo was loaded within federal weight limits
• Whether the load shifted during transport due to improper securement
• Whether the shipper, freight broker, or third-party loader bears any responsibility

Cell Phone and Telematics Data

Distracted Driving Behind the Wheel of a Semi

Distracted driving is dangerous in any vehicle. In a commercial truck, it is potentially fatal. We subpoena the driver's cell phone records to determine whether the driver was texting, calling, or using an app at the time of the crash. Carriers are also required to prohibit handheld phone use, and violations of that policy matter.

Fleet Telematics

Most modern commercial fleets use telematics systems that go well beyond the basic ECM. These systems provide:

• Real-time GPS location and route history
• Speed at specific points along the route
• Harsh braking and acceleration events
• Engine idle time and stop duration

Company Policies and Safety Culture

What Internal Documents Tell Us

Trucking companies are required to have written safety programs, driver training protocols, and drug and alcohol testing policies. In litigation, we go after those internal documents because they reveal the gap between what a company says it does and what it actually does.

We look for:

• Training materials that are outdated or inadequate
• Safety audits that identified problems that were never corrected
• Internal communications showing pressure on drivers to meet deadlines regardless of hours or conditions
• Prior accidents or complaints that were swept under the rug

FMCSA Safety Ratings

The FMCSA's Safety Measurement System (SMS) assigns carriers percentile scores across categories including unsafe driving, hours of service compliance, and vehicle maintenance. A carrier sitting in the 90th percentile for unsafe driving did not become that way overnight. That history matters in court.

Witness Statements and Crash Reconstruction

Eyewitness Accounts and Video Footage

In the immediate aftermath of a crash, witness accounts are critical. We work quickly to identify and interview anyone who saw the collision or the moments leading up to it. Dashcam footage from nearby passenger vehicles and surveillance cameras from businesses along the route can provide visual evidence that no other source can match.

Accident Reconstruction

For serious and fatal truck crashes, we retain accident reconstruction experts who use physical evidence to determine causation. They analyze:

• Skid marks and yaw marks on the roadway
• The debris field and final resting positions of vehicles
• Impact angles and crush damage
• Data from all available electronic sources

The Investigation Is Where Cases Are Won

Victims of truck accidents often come to us overwhelmed, in pain, and unsure of what to do next. The insurance company for the carrier has already assigned a team of adjusters and defense lawyers. That team is not working in your interest. They are working to minimize what they pay, and they started building their case the day the crash happened.

The investigation is not a formality. It is the foundation of everything. The difference between a case that settles for nuisance value and one that results in a substantial verdict often comes down to how quickly and aggressively the evidence was gathered in the first weeks after a crash. Evidence gets lost, memories fade, data gets overwritten, and witnesses move on.

Talk to Marko Law Before Evidence Disappears

Every day that passes after a truck accident is a day the evidence against the carrier is at risk. The trucking company's legal team is already working. You need someone in your corner who will work just as hard and move just as fast.

If you or someone you love was seriously injured in a truck accident in Michigan, contact Marko Law today for a free case evaluation. There is no cost to speak with us, and no obligation. We will tell you honestly what we see and what your options are.

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At Marko Law, we fight hard. We don't back down.