In a three-car, chain-reaction accident in Texas, the driver who started the collision by hitting the middle car is usually held liable for the damages to both vehicles in front.
However, this is not an automatic conclusion. Insurance companies will investigate to see if they assign a percentage of fault to you, the middle driver. This could reduce or even eliminate your ability to recover compensation for your losses.
This general rule is based on a legal concept called proximate cause—the idea that the first impact was the primary reason for the second. But other factors, such as your following distance or whether your brake lights were working, could be used by an insurance company to shift blame onto you. Proving the true sequence of events and protecting your rights requires a careful and immediate collection of evidence.
If you have questions after being involved in a multi-car accident on a San Antonio road, the situation is confusing. Call Cowen | Rodriguez | Peacock for a no-cost discussion about what happened at (210) 941-1301.

Key Takeaways for Liability in San Antonio Chain-Reaction Accidents
- The rear driver is usually liable. The legal principle of proximate cause dictates that the driver who started the chain reaction is responsible for all subsequent impacts.
- Insurance companies will try to assign you partial fault. Adjusters use the concept of comparative negligence, arguing you were following too closely to reduce the compensation you receive.
- Physical evidence determines the outcome. Police reports, witness statements, and vehicle damage analysis are essential to prove the sequence of events and protect your claim.
The “Chain Reaction” Myth: Why the Middle Driver Isn’t Automatically at Fault
You hit the car in front of you, so it’s natural to feel like you must be at least partially to blame. Many people assume that any time your vehicle strikes another from behind, you are automatically at fault.
An insurance adjuster for the rear driver will conduct a thorough investigation, looking for any evidence to argue you were partially at fault for the collision. They do this to minimize the amount of money their company has to pay out.
They might ask you seemingly innocent but leading questions, such as:
- "How much space was between your car and the one in front of you before the impact?"
- "Were you completely stopped when the collision occurred?"
- "Were you paying full attention to the car in front of you?"
Their objective is to find a reason to apply a concept called comparative fault, which is a method of assigning a percentage of blame to each person involved (more on this later on). If they successfully argue you share some of the blame, it significantly reduces the money you receive.
However, Texas law focuses on what caused the entire sequence of events. The legal principle for this is what we referred to earlier as "proximate cause." Think of it like a line of dominoes. The second-to-last domino is the one that physically knocks over the final one, but the person who pushed the first domino is the one who set the entire chain in motion.
In most rear-end chain reactions, the first impact from the rearmost driver is the proximate cause of all the impacts that follow. Our role is to build a case that clearly shows the first driver's actions were the sole cause, ensuring no amount of blame is unjustly placed on you.
What Does Texas Law Say About Following Distance and Fault?
The primary law an insurance adjuster will reference in these cases is Texas Transportation Code § 545.062. This statute requires every driver to maintain an "assured clear distance" from the vehicle ahead. It states that an operator must consider the speed of other vehicles, traffic, and road conditions to be able to stop safely without hitting the vehicle in front.
An adjuster might suggest that if you had left more space, the force of the initial impact wouldn’t have been enough to push you into the lead car.
Modified Comparative Negligence
This argument is rooted in Texas's use of a "modified comparative negligence" rule. This rule, found in Texas Civil Practice and Remedies Code § 33.001, assigns a percentage of fault to each party involved in an accident. You are permitted to recover damages as long as you are not found to be 51% or more at fault. If you are found 50% or less at fault, your final compensation award is simply reduced by your percentage of fault.
Are There Exceptions? When Could the Lead Driver Be at Fault?
While less common, there are situations where the driver of the front car could be partially responsible for the collision. For example, if their brake lights were not working, they would be in violation of Texas Transportation Code § 547.323, and it may be argued that this contributed to the chain of events.
Other possibilities include a driver suddenly reversing or pulling out into traffic without any warning. These scenarios are rare, but they are another reason why a thorough and independent investigation is important in any multi-vehicle crash.
How Do You Prove the Rearmost Driver Was 100% Liable?
Your entire case rests on proving the precise sequence of impacts and demonstrating that the rearmost driver’s actions were the sole cause of the collision.
Building a Factual Timeline
To establish the facts, we work to piece together the moments before, during, and after the crash using several key sources of evidence:
- The Police Report: The investigating officer’s official report contains a narrative of the events, diagrams of the scene, and any citations issued. While not always admissible in court, it provides a strong foundation for your insurance claim.
- Witness Statements: Independent witnesses who saw the sequence of the collisions are incredibly persuasive. Their neutral, third-party accounts confirm that you were struck from behind first. We work to identify and contact anyone who may have seen what happened.
- Vehicle Damage Analysis: The location and severity of the damage to all three cars tells an expert a story. For example, severe damage to your vehicle's rear bumper combined with less severe damage to your front bumper helps support the narrative that a powerful rear impact pushed you forward.
- Traffic and Dashcam Footage: This is usually the most direct and undeniable proof available. We immediately work to secure any available footage from nearby business surveillance systems, city traffic cameras, or dashcams from any of the involved vehicles.
Creating a Case the Insurance Company Can’t Ignore
When you hire an attorney to present a meticulously documented claim that anticipates and counters the insurance company’s potential arguments, it changes the entire dynamic of the negotiation. You are no longer just explaining what happened from your perspective; you are demonstrating it with objective, verifiable facts.
This makes it much more difficult for them to assign you an unfair percentage of blame. In Bexar County, with its congested highways, these types of chain-reaction collisions are unfortunately common. Our firm handles these specific scenarios frequently and understands the evidence needed to build a strong case.
Let Us Gather the Proof for You
While you focus on recovering from your injuries and getting your life back on track, our firm handles the process of evidence collection. We know what to look for, who to talk to, and how to assemble the facts into a powerful and persuasive claim.
What If an Amazon, FedEx, or 18-Wheeler Caused the Crash?
When the vehicle that rear-ended you is a commercial truck, whether it’s a delivery van for Amazon or UPS or a massive 18-wheeler, the case immediately becomes more cumbersome. The stakes are higher, and the legal process is different.
The sheer force generated by a heavier commercial vehicle almost guarantees that the middle car will be pushed forward with significant, destructive momentum. The simple physics involved typically lead to more severe injuries and catastrophic vehicle damage. Hence, the potential for life-altering consequences is much greater.
Dealing with Corporate Defendants and Commercial Insurance
Instead of dealing with an individual’s personal auto insurance carrier, you are now facing a large corporation and its commercial insurer.
These companies have teams of lawyers and rapid-response investigators whose primary job is to protect the company’s assets. They may arrive at the scene of a crash within hours to begin controlling the narrative and collecting evidence to defend their driver and company.
The insurance policies for commercial trucks are also much larger, which means the insurer has more money at stake and will fight harder to limit their payout.
Investigating Beyond the Driver
When a commercial truck is involved, our investigation expands beyond the driver’s actions to include the company itself. We look for evidence of corporate negligence, which may include a pattern of behavior that puts profits ahead of safety. This involves:
- Poor Hiring Practices: Did the company hire a driver with a known history of reckless driving, DUIs, or previous accidents?
- Inadequate Training: Was the driver properly trained to operate that specific type of vehicle safely in San Antonio’s congested traffic?
- Demanding Schedules: Did pressure from companies like Amazon, UPS, or FedEx to meet unrealistic delivery quotas encourage the driver to speed, tailgate, or drive while fatigued?
- Vehicle Maintenance: Were the truck’s brakes, tires, and other safety systems properly inspected and maintained according to federal regulations?
Our firm has deep experience in cases involving commercial vehicles. We understand the federal and state regulations that apply to trucking companies and know how to uncover evidence of corporate negligence to ensure all responsible parties are held accountable.

Frequently Asked Questions About San Antonio Chain-Reaction Accidents
What if the driver who hit me was uninsured or fled the scene?
In this situation, you may file a claim under your own Uninsured/Underinsured Motorist (UM/UIM) coverage. This is an important part of your own auto insurance policy designed to protect you in these exact scenarios.
It is highly recommended to carry this coverage, as Texas law only requires drivers to carry a minimum amount of liability insurance, which is not nearly enough to cover the costs of serious injuries.
Should I give a recorded statement to the other driver’s insurance company?
It is generally not in your best interest to provide a recorded statement without first speaking to an attorney. Insurance adjusters are trained professionals skilled at asking questions that may get you to inadvertently say something that could be interpreted as accepting partial blame for the accident.
The damage to my car doesn’t look that bad. Can I still be injured?
Yes. It is very common for car accident injuries, particularly those involving the soft tissues of the neck and back, to have delayed symptoms. Conditions like whiplash or herniated discs may not become painful for hours or even days after the collision. Always get a full medical evaluation after any accident, even if you feel fine at the scene.
How long do I have to file a claim in Texas?
In Texas, the statute of limitations for most personal injury claims is two years from the date of the accident. While that seems like a long time, the process of gathering evidence, documenting injuries, and building a strong case must begin immediately. Waiting too long results in lost evidence and weakened claims.
Do I really need a lawyer for a rear-end accident?
For a simple two-car fender-bender with minor damage and no injuries, you might not. But when you are the middle car in a three-vehicle crash, the question of "who is liable" becomes much more complicated. An attorney protects you from being unfairly blamed by insurance companies and works to ensure you pursue the maximum compensation available under the law.
Don’t Get Pinned With the Blame. Let Cowen | Rodriguez | Peacock Protect You.
We regularly help drivers in San Antonio and across Bexar County. We are familiar with the congested conditions on I-10, Loop 410, and US-281 that frequently lead to the kind of chain-reaction crashes we see frequently. You were simply in the wrong place at the wrong time, and now you are caught in the middle of a complicated and frustrating insurance claim.
We’ll get to work right from day one, ensuring your rights are protected and no amount of blame is put on you.If you’re ready to take the next step and understand your options, call our office now at (210) 941-1301.