Sharing the road with large commercial trucks is something millions of people do every single day. But when a crash happens, the results can be catastrophic. Trucks can weigh up to 80,000 pounds when fully loaded, and the size difference between a tractor-trailer and a passenger car makes even a minor collision potentially life-altering.
What many people don’t realize is that not all truck accidents are the same. Each type of crash happens for different reasons, involves different liable parties, and creates different legal challenges. Understanding what kind of accident you were involved in is one of the first and most important steps toward protecting your rights.
Whether you were hit from behind, caught in a truck’s blind spot, or swept up in a wide turn, knowing the specific circumstances of your crash helps build a stronger legal case. It also helps you understand what caused the accident in the first place.
This guide walks you through the 10 most common types of truck accidents happening on roads today — and what each one means for your potential legal claim.
Why Truck Accidents Are More Legally Complex Than Car Accidents
Truck accident cases are rarely straightforward. Unlike a typical car crash, a commercial truck accident can involve multiple responsible parties — the driver, the trucking company, a cargo loading crew, or even a truck manufacturer.
Federal and state regulations also apply to commercial trucks in ways they don’t for regular drivers. Things like hours-of-service logs, weight limits, and maintenance records all become important pieces of evidence.
This is why the types of truck accidents you experience directly affect who might be held liable and what kind of damages you may be able to recover. Getting the full picture requires experienced legal investigation from day one.
The 10 Most Common Types of Truck Accidents
Here is a clear breakdown of the most frequently seen common types of truck accidents on Illinois roads and highways today.
1. Jackknife Accidents
A jackknife accident happens when a truck’s trailer swings out to the side, forming an acute angle with the cab — much like the blade of a folding knife.
This typically occurs when a driver brakes too hard or too suddenly, especially on wet or icy roads. The trailer loses traction and keeps moving even as the cab slows down.
Jackknife crashes are extremely dangerous because the swinging trailer can sweep across multiple lanes of traffic, taking out several vehicles at once. These accidents often cause severe injuries or fatalities.
Liability in jackknife cases can fall on the driver for improper braking, the trucking company for poor training, or the maintenance crew if brake defects were involved.
2. Underride Collisions
An underride collision is one of the most devastating truck accident types on the road. It happens when a smaller vehicle slides under the rear or side of a truck trailer, often shearing off the roof of the car.
Rear underride accidents occur when a car rear-ends a stopped or slowing truck. Side underride happens when a car slides under the side of a trailer during a merge or lane change.
Federal law requires rear underride guards on commercial trailers, but these guards are not always strong enough or properly maintained. Defective or missing guards are a major factor in legal liability.
Victims of underride crashes face some of the most serious injuries imaginable, including traumatic brain injuries and catastrophic spinal damage.
3. Rollover Accidents
Rollover accidents happen when a truck tips onto its side or roof. These can occur due to excessive speed on curves, improper loading that shifts the truck’s center of gravity, or sudden overcorrection by the driver.
Improperly loaded cargo is one of the most common causes. When freight shifts during transit, it can cause the truck to become unstable almost without warning.
Rollovers are particularly dangerous on highways and ramps where speeds are high, and barriers may not stop a 40-ton vehicle. Other drivers nearby are often caught in the path of a rolling trailer.
Liability can involve the trucking company, the cargo loading team, or the driver depending on the specific cause.
4. Wide-Turn Accidents
Large trucks require significantly more space to make turns than standard vehicles. A wide-turn accident — sometimes called a squeeze play — happens when a truck swings left before turning right, trapping a car in the gap.
Drivers alongside the truck have no idea the vehicle is about to turn right. They pull into the space to the truck’s right, only to be crushed as the trailer swings over.
These accidents are especially common at urban intersections and loading zones where trucks regularly maneuver in tight spaces.
Trucking companies have a duty to train drivers in safe turning techniques. Failing to do so creates clear legal liability when a squeeze play crash causes injury.
5. Blind Spot Accidents
Every large truck has four significant blind spots — directly in front of the cab, directly behind the trailer, and along both sides. These zones are sometimes called “no-zones” because smaller vehicles in those areas are completely invisible to the driver.
A blind spot accident happens when a truck changes lanes, merges, or turns without detecting a car already in one of these danger zones.
| Blind Spot Location | Approximate Coverage Area |
|---|---|
| Front | 20 feet ahead of the cab |
| Rear | 30 feet behind the trailer |
| Driver’s Side | 1 lane width, full length of truck |
| Passenger’s Side | 2 lane widths, full length of truck |
These accidents often result in serious side-impact or sideswipe injuries. Driver training and proper mirror use are legal standards that, when violated, establish liability.
6. Rear-End Collisions
A fully loaded commercial truck traveling at highway speed needs up to twice the stopping distance of a regular car. When a truck driver follows too closely or reacts too slowly, the result is a catastrophic rear-end collision.
The force involved in a truck rear-ending a passenger car is often enough to push the car into oncoming traffic or into other vehicles. Injuries including whiplash, spinal fractures, and traumatic brain injuries are common outcomes.
Causes include driver fatigue, distracted driving, brake failure, and speeding. Each of these causes points to a different potential source of liability.
Therman Law has seen firsthand how rear-end truck crashes devastate families — and how often they were completely preventable with proper driver care and vehicle maintenance.
7. Head-On Collisions
Head-on collisions between trucks and passenger vehicles are among the deadliest events on any road. These crashes happen when a truck crosses the center line, enters a wrong-way lane, or loses control on a divided highway.
Fatigue is a leading cause. A drowsy truck driver may drift out of their lane without any warning. Impairment, distraction, and mechanical failure can also trigger these crashes.
The injuries sustained in head-on truck collisions are almost always catastrophic — multiple fractures, organ damage, severe brain trauma, or death.
Given the severity of these cases, it is essential to have legal representation that can investigate the driver’s logbook, the company’s scheduling practices, and any mechanical defects.
8. Tire Blowout Accidents
A truck tire blowout sends debris flying across the road at high speed and can cause the driver to suddenly lose control. Other drivers are forced to swerve or brake hard to avoid both the truck and the debris itself.
Blowouts are often caused by underinflated tires, overloaded trucks, worn tread, or failure to conduct routine inspections. Federal regulations require regular tire checks — when those are skipped, liability is clear.
The following parties may be responsible in a tire blowout accident:
- The trucking company (failure to maintain or inspect tires)
- The tire manufacturer (defective product)
- A third-party maintenance contractor (improper service)
- The driver (ignoring warning signs of tire wear)
Blowout accidents can happen in an instant, leaving victims with very little time to react.
9. Cargo Spill Accidents
When cargo is not properly secured, it can shift, fall off the truck, or spill across the highway. Unsecured loads create road hazards that cause chain-reaction crashes involving multiple vehicles.
Liquid cargo spills from tanker trucks are especially dangerous because they create large slick areas that cause vehicles to lose traction instantly. Hazardous material spills add another layer of danger.
Federal regulations require cargo to be properly loaded, secured, and inspected before and during transport. Failure to follow these rules is a direct path to legal liability.
The responsible party may be the driver, the trucking company, or the separate cargo loading company hired to load the trailer.
10. T-Bone and Intersection Accidents
T-bone crashes — where the front of one vehicle strikes the side of another — are alarmingly common at intersections involving commercial trucks. A truck running a red light or failing to yield can strike a passenger car with full momentum.
Because the side of a car offers very little structural protection, occupants on the impact side often suffer severe injuries. These include broken bones, internal bleeding, and head trauma.
| Accident Type | Primary Cause | Commonly Liable Party |
|---|---|---|
| Jackknife | Sudden braking | Driver / Trucking company |
| Underride | Following distance / Guard failure | Driver / Manufacturer |
| Rollover | Speed / Cargo shift | Driver / Loading crew |
| Blind Spot | Improper lane change | Driver |
| T-Bone | Red light violation / Failure to yield | Driver / Trucking company |
Intersection cameras, eyewitness accounts, and the truck’s electronic data recorder are all key sources of evidence in these cases.
Key Legal Factors That Differ by Accident Type
Understanding which type of crash occurred is only part of the equation. Each accident type carries its own set of legal considerations that affect how a case is built and who can be held responsible.
Here is a numbered summary of the core legal factors to investigate after any truck accident:
- Driver records — hours-of-service logs, past violations, and training history
- Vehicle maintenance records — inspection logs, repair history, and compliance with federal standards
- Cargo documentation — loading records, weight tickets, and securement checklists
- Electronic data — the truck’s black box, GPS data, and onboard cameras
- Company policies — scheduling pressures, safety protocols, and driver supervision
- Third-party involvement — maintenance contractors, loading companies, and equipment manufacturers
With over 35 years of combined experience, the attorneys at Therman Law understand how to pull together this evidence quickly before it disappears.
What to Do After a Truck Accident in Illinois
The steps you take after a truck accident directly affect the strength of your legal claim. Here is what matters most.
- Seek medical attention immediately, even if you feel fine at first. Many serious injuries — including internal bleeding and traumatic brain injuries — do not show obvious symptoms right away.
- Preserve everything. Keep photos, medical records, police reports, and any communication from insurance companies. Do not give recorded statements to the trucking company’s insurer without legal representation.
- Report the accident to police and request a copy of the official report. The sooner an attorney can begin investigating, the better your chances of recovering full compensation.
Take the Next Step With Experienced Legal Help
Understanding the types of truck accidents is the first step. Getting the right legal team behind you is what actually protects your future.
Therman Law Offices has secured over $100,000,000 in settlements for more than 6,000 clients across Illinois, with a 99% success rate. The firm offers free consultations, free investigations, and 24/7 availability — with absolutely no fees unless you win.
With offices in Chicago, Wheaton, Schaumburg, Gurnee, and Rockford, help is always close by. If you or someone you love has been injured in a truck accident, do not wait. Contact us today to speak with an attorney who knows exactly how to fight for you.
Therman Law Offices, LTD operates on a “No Win, No Fee” basis. Consultation and case evaluation are provided at no cost to the client.
