Types of Truck Accidents in San Diego: Causes & Help

The type of truck crash usually tells you where the case will be won. A jackknife points to braking and speed data, an underride points to the trailer's guards, a rollover points to how the cargo was loaded. Each kind of collision turns on a different set of evidence and a different theory of who is responsible, which is why naming the crash type is the first step toward proving it.

This guide breaks down the most common types of truck accidents in San Diego, why each one happens, and what the case tends to turn on. For the firm's broader work, see our San Diego truck accident page.

​

Key Points

• The crash type drives the evidence. Different collisions are proven with different records: braking data, maintenance files, cargo weight tickets, or trailer-guard condition.
• Most truck crashes trace back to speed, fatigue, or maintenance, all of which leave a paper or data trail the company controls.
• More than the driver is usually at fault. The carrier, a cargo loader, a maintenance vendor, or a parts maker often shares responsibility.
• California caps trucks at a lower speed than cars, which matters in speed-related crash types.

​

Jackknife Accidents

A jackknife happens when the trailer skids and swings out to a sharp angle with the cab, like a folding knife, sweeping across lanes and pulling the rig out of the driver's control. It usually comes from braking too hard for the conditions, slick roads, going too fast on a downgrade, or uneven braking caused by poorly maintained brakes. What the case turns on: the truck's electronic data showing speed and brake application, and the brake inspection and maintenance records, because brake imbalance is a maintenance failure the carrier owns, not just a driver mistake.

​

Underride and Override Crashes

An underride happens when a smaller vehicle slides beneath the rear or side of a trailer; an override is the reverse, where the truck rides up over the vehicle in front of it. Both are among the deadliest crashes because the impact intrudes into the passenger compartment. They often come down to a missing or weak rear underride guard, worn-off reflective conspicuity tape, broken brake lights, or a truck that stopped abruptly. What the case turns on: the condition of the trailer's underride guard and reflective tape, the maintenance records, and sometimes a defective-guard claim against the trailer manufacturer. The federal equipment rules behind these guards are covered in our guide to federal trucking regulations.

​

Truck Rollovers

Because a loaded truck has a high center of gravity, it can tip onto its side or roof when it takes a curve or freeway ramp too fast, when the load shifts, or when the trailer is overloaded or unevenly loaded. Driver fatigue and abrupt steering make it worse. What the case turns on: the cargo loading and securement records and the weight tickets, which can put a cargo loader or shipper on the hook alongside the driver and carrier, plus the speed data going into the curve. California limits most heavy trucks to 55 miles per hour, so a rollover at higher speed is often a speed-limit violation on its own.

​

Tire Blowouts and Brake Failures

A sudden tire blowout or brake failure can send a heavy truck out of control in seconds. These crashes trace back to worn or underinflated tires, retreads that come apart, deferred brake repairs, and overloading that overstresses both. What the case turns on: the maintenance file, the driver vehicle inspection reports, repair orders, and any out-of-service history, plus a forensic exam of the failed part. Depending on what the records show, responsibility can fall on the carrier for deferred maintenance, a maintenance contractor, or a tire or parts manufacturer. The records that prove it are the focus of our guide to the truck accident investigation process.

​

Blind-Spot (No-Zone) Sideswipes

Large trucks have deep blind spots, called no-zones, on all four sides. When a driver changes lanes or merges without accounting for a vehicle in a no-zone, the result is a sideswipe that can force a smaller vehicle off the road. The usual causes are an unsafe lane change, mirrors or camera systems that are missing or poorly adjusted, and simple inattention. What the case turns on: dashcam and lane-position reconstruction, the truck's mirror and camera equipment, and the driver's training record. The defense often argues the smaller vehicle lingered in the no-zone, which is where how fault is divided becomes the fight.

​

Wide-Turn Crashes

To make a tight right turn, a truck driver swings the cab left first, which can trap a vehicle, cyclist, or pedestrian on the truck's right side. Crashes happen when the driver misjudges the turning radius, fails to signal or control the lane, or tries to force the turn in heavy traffic. What the case turns on: intersection and business surveillance video, the turn-signal and steering data, and a reconstruction of where each party was. These crashes are especially dangerous to people on foot and on bikes, given how little protects them from the trailer.

​

Rear-End and Following-Too-Closely Crashes

A fully loaded truck needs far more distance to stop than a car, so a truck that follows too closely or is speeding can rear-end a slowing or stopped vehicle with crushing force. Fatigue and distraction are common contributors. What the case turns on: the electronic control module data showing speed and braking, the following distance, and the driver's hours-of-service logs when fatigue is suspected. Following too closely is itself a Vehicle Code violation, which supports a finding of negligence against the driver and, through it, the carrier.

​

San Diego's High-Risk Truck Corridors

San Diego is a major freight hub, and a handful of corridors carry most of the heavy truck traffic, so they see most of the serious crashes:

• Interstate 5: the main north-south freight route from the Port of San Diego, with heavy truck volume through the downtown merges and the grades toward Camp Pendleton.
• Interstate 8: the east-west route through Mission Valley to the desert, where the curves invite rollovers when drivers carry too much speed.
• Interstate 15: the inland long-haul corridor toward Riverside and Las Vegas, where grade changes raise the risk of jackknifes and brake failures.
• SR-905 and SR-125 (Otay Mesa): the cross-border freight routes, where crashes often involve international carriers, brokers, and freight companies and lead to complex multi-party litigation.

​

Who Is Liable and What You Can Recover

Whatever the crash type, a serious truck case usually reaches past the driver to the trucking company, and often to a cargo loader, a maintenance vendor, a broker, or a parts manufacturer. Identifying every responsible party matters because each one can bring a separate layer of insurance, which is frequently what makes a full recovery possible. You can read more about who can be held responsible, the compensation available to truck accident victims, and the injuries these crashes commonly cause.

​

How Hulburt Law Firm Can Help

If you or someone you love was seriously hurt in any kind of truck crash in San Diego, Hulburt Law Firm can identify what your case turns on, preserve the evidence before it is gone, and pursue every responsible party for full and fair compensation. Call (619) 821-0500 or message us through our contact page for a free, confidential case review.

‍