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Who Is at Fault in a Roundabout Accident - MO Law

  • Writer: Kenneth Powell
    Kenneth Powell
  • 4 days ago
  • 5 min read

More and more roundabouts are being installed all the time across Missouri, including in busy areas around St. Louis and the Kansas City area. Roundabouts are designed to improve the flow of traffic and reduce the chance of collisions, but many drivers become confused by how they work. For instance, some roundabouts might have a stop sign, others might have a yield sign. Drivers who are not paying attention could play a significant role in an accident.


When a Missouri car crash occurs in a roundabout, fault determination is far from easy. Understanding traffic laws, driver responsibility, and common scenarios can help establish fault.


Those who have been injured in a roundabout accident in and around St. Louis are invited to reach out to the Powell Law Firm for a free consultation. They can also discuss who is at fault in an underride accident MO.

Understanding Roundabout Rules in Missouri

Understanding Roundabout Rules in Missouri


The law in Missouri requires drivers to yield to traffic in the roundabout. Additionally, drivers must obey all traffic laws and signs in the roundabout. In most cases, signs are placed around every entrance, and vehicles must give right of way to cars that are already in the roundabout. Failure to yield, making an improper lane change, or exiting the roundabout without proper signaling can cause a collision.


Common Causes of Roundabout Car Accidents


There are many things that can cause an accident when on the road, including a car that stops suddenly, not following at a safe distance, or road conditions. Driver behavior, however, is the most common cause of roundabout accidents, so it's worth it to understand these before determining fault:


1. Failing to Yield

A driver entering into a roundabout must yield to vehicles that are already in the circle. If they do not merge into a roundabout without yielding, and then collide with another vehicle, the driver who failed to yield is likely the at fault driver.


2. Improper Lane Usage

Some roundabouts are multi-lane roundabouts. This means that a driver must choose a lane based on their intended exit. If a driver fails to change lanes without signaling, or if they exit from the wrong lane, it commonly leads to side-swipes.


3. Speeding

Excessive speed in a roundabout can lead to losing control and reduced reaction time when braking. This also reduces safe following distance, which increases the chance of crashes like rear end collisions where a driver can't stop and hits the front driver from behind.


4. Distracted Driving

Drivers who are not paying attention in a roundabout might miss signage, misjudge traffic gaps, or not notice another motor vehicle changing lanes. All of these can cause accidents.


5. Miscommunication

Roundabouts require clear signaling. When drivers do not use turn signals, it can lead to confusion for other drivers. This, of course, can lead to an accident.


Liability in Roundabout Accidents - Fault Determination


Per Missouri law, liability in a car accident is based on a driver's negligence. With fault determined, the at-fault driver/drivers are responsible for damages. When a roundabout accident occurs, investigators and insurance adjusters will look at several factors at the accident scene to determine fault:


  • Traffic cameras

  • Skid marks

  • Vehicle damage

  • Witness statements

  • Police reports

  • Signs and lane markings


Any driver who doesn't yield to oncoming traffic, doesn't pay attention to traffic control devices, or drives in an unsafe manner is generally considered to be negligent, and thus, at fault. For more information, these motor vehicle accident lawyers in St Louis may be able to help.


Comparative Fault in Missouri - How is Fault Determined?


It's possible that a driver could be partially responsible for a roundabout crash, too, thanks to Missouri's pure comparative fault system. In other words, two or more people or entities could share responsibility for an accident.


Here's an example where there are two drivers involved in an accident: Driver A enters the roundabout, but he fails to yield to Driver B. However, Driver B was speeding and trying to make an improper left turn out of the roundabout. Fault is eventually determined, and Driver A is found to be 60% at fault, while Driver B is found to be 40% at fault. If damages were $100,000, Driver A would recover $40,000 and Driver B would recover $60,000.


More Examples of Roundabout Accident Scenarios in Missouri


Scenario 1: Driver Fails to Yield While Entering

Driver A enters the roundabout without yielding and hits Driver B's vehicle, which is already circulating. In this case, Driver A is likely fully at fault.


Scenario 2: Lane Change Inside the Roundabout

Two cars are moving throughout a two-lane roundabout. Driver A improperly changes lanes to exit and sideswipes the vehicle of Driver B. Driver A made the improper lane change, and would likely bear most, if not all, of the fault.


Scenario 3: Speeding Driver Inside the Roundabout

Driver A is circulating properly but going well above the recommended speed. Driver B enters the roundabout correctly but is struck by Driver A due to excessive speed. Both drivers may share fault depending on the evidence.


Scenario 4: Distracted Driver Misses Exit

Driver A misses their exit, abruptly swerves to correct the error, and causes a collision. In this case, the distracted driver is likely at fault for making an unsafe maneuver.


What to Do After a Roundabout Accident in Missouri Before Determining Fault


Those involved in a roundabout accident should do the following:


  • Call 911

  • Exchange information with other drivers and witnesses

  • Gather evidence - take photos and videos of the scene, the victims vehicle, any other vehicle, and signs

  • Get medical attention, even if there are no serious injuries

  • Never admit fault


These steps help preserve evidence and protect legal rights.

How Powell Law Firm Can Help

How Powell Law Firm Can Help


Car accident claims can be very confusing. The claims process involves fighting with insurance companies and struggling with financial recovery. If injuries were involved, there are lost wages, medical bills, and other losses that must be covered by someone.

Powell Law Firm can work with victims of roundabout accidents in Missouri to take legal action and collect potential compensation from at-fault parties. The legal team investigates everything thoroughly, gathers physical evidence, and fights for the compensation their clients deserve. They can also advise on who is at fault in a brake failure accident MO.


With Missouri's comparative fault laws, getting compensation is a complex process. So, having a skilled attorney can make a significant difference. Powell Law Firm works to ensure clients are not unfairly assigned blame, helps to keep a cleaner driving record, and helps recover damages for medical expenses, lost income, and pain and suffering.


Contact Powell Law Firm for a Free Consultation


Determining who is at fault in a roundabout accident in Missouri involves examining traffic laws, driver behavior, and evidence from the scene. Because multiple parties may share blame, understanding how Missouri's laws work is critical. For anyone injured in a roundabout accident in the St. Louis area, contacting a trusted law firm like Powell Law Firm can provide clarity, advocacy, and peace of mind. Call for a free consultation.

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