How Is Fault Determined in a Car Accident?

Determining fault for a car accident is very fact-specific and often difficult

By Kimberly Lekman, Esq. | Reviewed by Canaan Suitt, J.D. | Last updated on April 25, 2024

Use these links to jump to different sections:

If you have experienced a car accident, you might be considering legal action against the other drivers involved in the wreck. Through an auto insurance claim or even a lawsuit, you may be able to recover damages for the costs of your medical expenses, lost earnings, vehicle damages, and more. However, your settlement amount will crucially depend on which party was at fault for the crash.

What Factors Determine Fault for a Car Accident?

Car crashes can occur for a wide variety of reasons and can have multiple complicating factors. Weather conditions, medical emergencies, driver error, and more are all issues that can combine to cause a motor vehicle accident. This jumble of factors can make it difficult for insurance adjusters—or judges and juries if you go to court—to determine who is at fault for an auto accident or how fault should be apportioned between multiple drivers.

Determination of fault and the degree of fault in car accident claims are made on a case-by-case basis. Consider the following two scenarios:

Scenario 1: Driver Committed a Traffic Law Violation

If one of the drivers in your accident broke traffic laws, fault might be easy to establish. When a driver violates a traffic law and an accident follows, this usually creates a presumption that they were at fault. For example, suppose you were in a car accident with a driver who ran a red light and struck your car in the intersection. In that case, it should be fairly easy to show that the other driver was at fault for the accident.

There are many other state traffic laws on the books that drivers must follow for the safety of others on the road. When drivers break these laws, accidents result. Some other common traffic violations include:

  • Speeding
  • Failure to yield
  • Failure to stop at a stop sign
  • Driving the wrong way
  • Drunk driving
  • Crossing a median and driving into oncoming traffic

If you think that the other driver in your accident violated traffic laws, it would be wise to consult an attorney. State laws vary, and the interpretation of these laws evolves with time. An experienced car accident attorney can investigate the facts of your case and determine whether the other driver violated traffic laws to cause your accident.

Scenario 2: Driver Caused a Rear-End Collision

When a motor vehicle hits another from behind, it’s often due to following too closely or distracted driving. Rear-end collisions can cause severe consequences because the front driver often does not see the impact coming until it’s too late to avoid it. Generally speaking, a driver who strikes another vehicle from behind is usually at fault. However, there may be exceptions to this general rule.

Consider, for example, a chain-reaction car wreck. If one car rear-ends another, it may push it into the next automobile. In this case, the fault will most likely lie with the driver who caused the first collision in the chain reaction. However, the other drivers could also be at fault if they followed too closely. As mentioned above, your attorney will need to investigate the facts of your specific case to determine where the fault lies accurately. Sometimes several parties might share the fault.

What if More than One Driver is At Fault for a Car Accident?

Determining fault in a car accident can become more complicated when several parties contribute to the accident. If you were partially responsible for your auto accident, this might reduce the value of your case. However, state laws vary on the distribution of fault in car accidents, typically using one of the following methods:

1. Contributory Fault

When several parties are responsible for an accident, legal concepts known as “comparative fault” or “contributory fault” kick in.

Take, for example, a highway accident where a car driver fell asleep at the wheel and swerved into another lane. A bus traveling in the other lane is going ten miles above the speed limit and collides with the car. In this case, both the bus driver and the car driver violated traffic laws. So, the fault lies with both drivers. However, the car driver is probably more at fault because they fell asleep at the wheel.

In some states, if a party contributed to the accident at all, they cannot recover for their damages from the other party. This is known as “contributory fault” or “contributory negligence.” However, contributory fault is becoming less and less popular, and most states have phased it out. Instead, most states use a “comparative fault” model.

2. Comparative Fault

With comparative fault (sometimes called “comparative negligence”), each party will receive a percentage of fault. Their financial award will be reduced according to their share of fault. In the above example, the car driver might be 70 percent at fault and the bus driver 30 percent at fault. In a pure comparative fault state, the bus driver can recover damages even though they were partially at fault. However, their financial award will be reduced by 30 percent. The car driver can also make a claim for their damages even though they were 70 percent at fault. However, their payment will be reduced by 70 percent.

To further complicate matters, some states have implemented a “modified comparative fault” law. Under this standard, a driver who is more than 50 percent at fault cannot make a claim for their damages from the other party. In our example, this would mean that the car driver could not make a claim against the bus driver in a modified comparative fault state.

How Do You Gather Evidence of Fault After a Car Accident?

After a car accident, you should ensure you and everyone involved are safe. Next, call 911 if anyone is severely injured. If you were fortunate enough to escape with only minor injuries, you could call the local police station directly. You should not leave the scene of the accident without exchanging contact details and insurance information with the other drivers. Leaving the accident scene is against the law in many states. Further, there may be laws in your state requiring you to inform the police of any car accident that causes property damage above a certain threshold or bodily injury.

When the police arrive at the scene, they will ensure everyone is safe, redirect traffic, and issue citations as needed. They will also create a police report. This report will contain details about the car accident, such as the positioning of the automobiles, the weather conditions, and eyewitness accounts. Further, the police officer may include their own opinion about who the at-fault driver was.

Car insurance companies will probably require a copy of the police report before issuing any payments through your car insurance coverage. If the police did not arrive at the scene of your accident, you should go to a local police station to inform them of the accident. In some jurisdictions, you can file a report about your collision online. It would be wise to contact the local police department to learn how to inform them of your accident and request a copy of your official accident report.

Why Hire an Attorney?

Determining fault in a motor vehicle accident can be a complex matter. An experienced car accident attorney and their law firm staff can gather and analyze evidence from your accident like police reports, medical records, eyewitness reports, medical bills, and more. Next, they can apply this evidence to your state’s laws and build a case. Further, your attorney can provide you with legal advice on handling calls from insurance adjusters and other attorneys.

There might be a time limit (a statute of limitation) on your ability to file a personal injury claim under your state law. Insurance policies often require car accident victims to file claims promptly after the accident too. So, it’s a good idea to contact a personal injury attorney as soon as possible about your claim.

Because most personal injury lawyers offer a free consultation, you have nothing to lose by contacting an attorney about your car accident.

Was this helpful?

What do I do next?

Enter your location below to get connected with a qualified attorney today.
0 suggestions available Use up and down arrow keys to navigate. Touch device users, explore by touch or with swipe gestures.

At Super Lawyers, we know legal issues can be stressful and confusing. We are committed to providing you with reliable legal information in a way that is easy to understand. Our legal resources pages are created by experienced attorney writers and writers that specialize in legal content in consultation with the top attorneys that make our Super Lawyers lists. We strive to present information in a neutral and unbiased way, so that you can make informed decisions based on your legal circumstances.

0 suggestions available Use up and down arrow keys to navigate. Touch device users, explore by touch or with swipe gestures.

Find top lawyers with confidence

The Super Lawyers patented selection process is peer influenced and research driven, selecting the top 5% of attorneys to the Super Lawyers lists each year. We know lawyers and make it easy to connect with them.

Find a lawyer near you