Skip to main content
Author photo

Written by Kayla Jane Barrie Updated on Feb 24, 2025 6 mins read

Blog T-Bone Accidents and Insurance Impact

What happens when a car is t-boned?

T-bone, or side-impact, accidents are dangerous and unfortunately common in Ontario. Whether at a busy intersection or when merging on a highway, these collisions can cause severe damage to vehicles and seriously injure people involved.

In this blog post, we will explore the causes and insurance consequences of T-bone accidents, how fault is determined, and what steps to take if you find yourself involved in such an incident.

Three main takeaways about t-bone collisions

  • T-bone accidents are some of the most common at-fault accidents in Ontario.
  • They can cause severe vehicle damage, injuries, emotional trauma, and have significant insurance repercussions.
  • The driver at fault in a T-bone accident is the person who was acting negligently.

What does t-bone mean in a car accident?

T-bone accidents, also known as side-impact or broadside collisions, occur when the front of one vehicle hits the side of another. These accidents often happen at intersections and can cause severe damage and injury due to the limited protection on vehicle sides.

These accidents are hazardous because the impact occurs on the side of the car, leaving less protection for occupants. The force in a t-bone collision moves the driver and passengers sideways, increasing the chance of contact with the car's window or door.

They typically occur when one driver fails to yield the right-of-way. This often happens at intersections controlled by traffic lights or stop signs. For instance, a driver making a dangerous left turn might assume another motorist will stop at a yellow light. If the driver proceeds through the yellow light, they could hit a turning car. Similarly, a driver might improperly pass through a stop sign and strike the side of another vehicle in the intersection.

The impact of T-bone accidents can be devastating due to the nature of the collision. Common consequences include:

  • Vehicle damage: The sides of vehicles are often less protected than the front and rear, which can result in significant damage.
  • Injuries: Passengers on the side of impact face a higher risk of serious injuries such as broken bones, head trauma, and internal injuries.
  • Fatalities: In severe cases, especially at high speeds, T-bone accidents can lead to deaths.
  • Emotional trauma: Survivors may continue to experience long-term psychological effects, such as anxiety and PTSD.

Who is at fault for a t-bone accident in Ontario?

One of the most common questions about these types of accidents is who is at fault, and finding fault isn’t always cut and dry in insurance.

The driver at fault in a T-bone accident is the person who was acting negligently on the road by not following traffic signs or driving illegally. For instance, the driver who made the left turn is usually to blame in a crash. Since it is not always the case that the left-turning driver drove negligently, the fault will lie with the incautious driver.

Usually, the driver making the turn is at fault, although there are exceptions, such as when the other driver was speeding or running a red light.

Here are some examples:

  • Traffic signals and signs: The primary consideration is whether a driver disregarded a red light or stop sign. Traffic cameras, red light cameras, or witness statements can provide essential evidence.
  • Right of way: Investigators will determine which driver had the right of way. If drivers fail to yield when required, they are usually found at fault.
  • Police report: A police report often contains the officer’s assessment of fault based on the evidence at the scene, such as skid marks and vehicle positions.
  • Witness statements: Witnesses can offer valuable testimonies about what transpired before, during, and after the accident.
  • Vehicle damage: The nature and the location of the damage can assist in reconstructing the accident and determining which vehicle struck the other.
  • Driver behaviour: It's important to note that evidence of distracted driving, speeding, or impairment can be critical in determining fault.

In some cases, neither driver may be at fault. Poorly designed roads or malfunctioning traffic signals could lead to a claim against municipalities or construction companies. Also, a vehicle defect that causes a driver to be unable to stop could hold the car manufacturer accountable.

Will a t-bone accident increase my insurance premiums?

If you are found to be at fault for a t-bone accident, your premiums will likely increase. The severity of the accident and your driving history also play a role in determining the extent of the increase. Different insurance companies have varying underwriting guidelines, so the premium adjustment may differ depending on the insurer.

Insurance companies typically adjust premiums in one of three ways: by increasing the base rate, adding a surcharge, or updating your loss history. The base rate is the starting point for calculating your premium, and it may be adjusted upward after an accident. A surcharge is an additional fee added to your premium for a specific period, typically lasting several years. The accident will also be added to your loss history, which can impact your future premiums by making you a higher-risk driver.

To minimize the premium increase after a t-bone accident, you can take several steps. If you believe you were not at fault, dispute the determination with your provider. Maintaining a good record by avoiding traffic violations and accidents can also help keep your costs low. Shopping around for insurance quotes from different companies can ensure you are getting the best rates.

Additionally, some companies offer accident forgiveness programs that can waive or reduce premium increases for certain types of accidents.

How do t-bone accidents happen?

T-bone collisions typically occur when a driver fails to yield the right of way, which can happen for various reasons. Here are some examples:

  • Running lights or stop signs: One of the most common causes is when a driver runs a red light or stop sign and collides with a vehicle with the right of way.
  • Not paying attention: Drivers texting, talking on the phone, or otherwise distracted may not notice traffic signals or other vehicles.
  • Driving too fast: Speeding reduces a driver’s reaction time and increases the likelihood of running a red light or failing to yield.
  • Driving high or drunk: Impaired drivers may have slower reaction times and poor judgment, which can lead to a failure to obey traffic signals.
  • Poor weather conditions: Rain, snow, or fog can reduce visibility and make it harder for drivers to see traffic signals and other vehicles.

T-bone collision examples

Here are two examples of what a T-bone accident can look like and how it can be handled:

Example one: John was driving through an intersection when another driver, Lisa, ran a red light and collided with his car. John sustained minor injuries, and his car was severely damaged.

They exchanged insurance information and filed claims with their respective insurance companies. John's insurance initiated a claim against Lisa for the damages. After reviewing the settlement offer, John's car was repaired, and he received reimbursement for his medical expenses. Both companies finalized the claim, and John was back on the road with his car fully repaired and his medical expenses covered.

Example two: Emma was driving her SUV when Frank, who was speeding, failed to stop at a stop sign and t-boned Emma's SUV. Emma sustained injuries, and her SUV suffered extensive damage. Both drivers exchanged insurance information, and the police created an accident report.

Emma filed a claim against Frank’s provider and gave photos of the damage and medical records. Frank’s company offered a settlement to cover the repairs and Emma's medical expenses, which Emma's company reviewed. The repair shop billed Frank’s insurance company directly, and Emma received reimbursement for her medical expenses. Finally, both companies finalized the claim, and Emma got her SUV repaired and her medical expenses covered.

What to do after a t-bone accident

Getting into a T-bone collision can be overwhelming. Here are the steps to take after the event:

  • If possible, move the vehicles to a safe location to prevent further accidents and clear the intersection or road.
  • Ensure everyone is safe and call emergency services if there are any injuries.
  • Exchange insurance information without admitting fault.
  • A police report is crucial for insurance claims and determining fault.
  • Take photos of the vehicles, damage, traffic signals, and relevant road conditions.
  • If there are any witnesses, collect their contact information and statements.
  • Even if you feel fine, get a medical check-up to rule out any hidden injuries.
  • Report the accident to your insurance company and provide all necessary documentation.
  • Visit a collision reporting centre.
  • Consider getting legal support for the case if necessary.

Get an insurance quote right now and save

Shop and compare auto insurance options online anytime. We'll help you find the best coverage and lowest premiums from the leading insurers in Canada.

Black car pulled over on the side of the road

T-bone accident FAQs

It’s possible to experience whiplash from a T-bone accident. It happens when the neck is abruptly jolted back and forth, which is common in side-impact collisions like T-bone accidents. This can lead to injuries in the neck muscles and ligaments, resulting in symptoms such as neck pain, stiffness, and headaches. If you think you have whiplash, it's important to seek medical attention.

T-bone accidents can be deadly because the side of a vehicle has less protection. The severity of depends on factors such as vehicle speed, point of impact, and safety features deployed. These accidents can lead to severe injuries or fatalities, especially for those seated on the side of the vehicle that is hit.

A side-impact collision, also known as a T-bone collision, occurs when the front of one vehicle crashes into the side of another, forming a "T" shape at the point of impact. This collision often happens at intersections or when one vehicle fails to yield the right of way.

Learn more about how your policy can protect you during a t-bone collision claim

T-bone accidents are severe and can have long-lasting impacts on those involved. Understanding the common causes and consequences and how fault is determined can help you navigate the aftermath of such an incident. Remember to stay calm, prioritize safety, and have your Ontario car insurance up-to-date.

Share

Categories Auto
Tags Auto Coverage

Latest Articles

Checkout our latest articles on insurance and other helpful topics.

woman on phone while driving
2024-04-08

Careless Driving Impact on Insurance

Are you wondering how much a careless driving ticket will affect your insurance in Ontario? Get our questions answered and learn how much you may see your rate go up.

man texting and driving in his car
2024-04-05

Careless Driving Charges In Ontario

Got a careless driving ticket in Ontario? Here’s everything you need to know about careless driving charges, fines, and penalties.

car hydroplaning on a rainy day
2024-04-03

How To Avoid Hydroplaning

You may not have control over the rain, but you can control how you handle hydroplaning (aquaplaning). Here’s how hydroplaning can happen and what to do to prevent it.

SUV driving in the rain at golden hour
2024-04-01

How To Drive In The Rain

Our experts offer 25 safety tips for driving in the rain. You’ll discover the best lights to use, what speed limit to follow, how to drive safe when it’s raining.