What Does “At Fault” Mean in a Car Accident?
Being “at fault” means a driver is legally responsible for causing a motor vehicle accident. In Australia, fault is generally determined by assessing whether a driver failed to exercise reasonable care or breached a road rule, resulting in the collision.
Examples of situations where a driver may be considered at fault include:
- Running a red light or failing to stop at a stop sign.
- Failing to give way where required.
- Following another vehicle too closely.
- Changing lanes without checking it is safe.
- Speeding or driving too fast for the conditions.
- Driving while distracted, fatigued or under the influence.
Not every accident has a clear-cut outcome. Some collisions involve shared responsibility, where both drivers contributed to the accident. In these situations, liability may be apportioned between the parties based on the available evidence.
Importantly, fault isn’t determined simply because one driver apologised at the scene or because a vehicle suffered more damage. Instead, insurers and, where necessary, courts consider the overall evidence before reaching a decision.
What to Do Immediately After a Car Accident if You’re Not at Fault
The actions you take immediately after an accident can play a major role in proving what happened. Staying calm and gathering evidence while the details are still fresh will make it much easier to establish liability later.
After ensuring everyone is safe and contacting emergency services if required, you should:
- Exchange names, contact details and vehicle registration information with the other driver.
- Obtain the other driver’s insurer and policy details if available.
- Take clear photographs of all vehicles, damage, number plates, skid marks, road signs and the surrounding area.
- Record the exact location, time and weather conditions.
- Obtain contact details for any independent witnesses.
- Preserve any dash cam footage before it is overwritten.
- Avoid admitting fault or arguing about who caused the accident.
Even if you believe the circumstances are obvious, evidence collected immediately after the collision is often far more reliable than trying to reconstruct events days or weeks later.
Contact I’m In The Right early
If you’ve been involved in a not-at-fault accident, contacting I’m In The Right early can simplify the entire process. Rather than navigating insurer discussions on your own, eligible drivers can receive guidance through the accident management process while arrangements are made for a comparable replacement vehicle.
For eligible not-at-fault drivers, benefits may include:
- No out-of-pocket hire costs.
- Like-for-like replacement vehicles, including compact cars, SUVs, luxury and commercial vehicles.
- Flexible hire periods until repairs are completed or the claim is finalised.
- Fast vehicle dispatch, often within 15 minutes of approval.
- Recovery of hire costs directly from the at-fault driver’s insurer.
- Assistance coordinating repairs and communicating with insurers.
Our team is available 24 hours a day, 7 days a week to help eligible drivers understand their options and get back on the road as quickly as possible.
Who Determines Fault in a Car Accident?
Many drivers assume the police decide who was at fault after a car accident. In most cases, however, liability is determined by the insurers, after they assess the available evidence.
Depending on the circumstances, the following parties may be involved:
- Insurance claims assessors, who review the evidence and determine liability for insurance purposes.
- Loss adjusters or investigators, who may be appointed to investigate more complex or disputed claims.
- Police, who investigate traffic offences or serious accidents and may prepare reports that assist insurers, but generally do not determine civil liability.
- Courts, if liability remains disputed and legal proceedings become necessary.
Insurance companies assess each claim independently by reviewing evidence such as photographs, dash cam footage, witness statements, vehicle damage and, where available, police reports. If insurers disagree about liability, the matter may be resolved through further negotiations or, in some cases, the courts.
Although police reports can provide valuable independent evidence—particularly where officers attended the scene or issued infringement notices—they are only one piece of the overall evidence considered when determining fault.
What Evidence Can Help Prove Who Was at Fault?
Strong evidence is the foundation of any successful liability assessment. The more objective information available, the easier it becomes to establish what happened.
Useful evidence includes:
- Photographs of vehicle damage.
- Images of the accident scene.
- Dash cam recordings.
- CCTV footage from nearby businesses or traffic cameras.
- Independent witness statements.
- Police reports.
- Vehicle damage assessments.
- Accident diagrams.
- Weather and road condition information.
- Mobile phone records where distraction may be relevant.
Each piece of evidence helps build a clearer picture of the events leading up to the collision. While one item alone may not prove fault, several consistent sources often provide enough information for insurers to determine liability with confidence.
Common Accident Scenarios Where Fault Is Usually Clear
While every accident is assessed individually, some types of collisions generally have well-established liability principles.
These commonly include:
Rear-end collisions
Drivers are usually expected to maintain a safe following distance. In many situations, the driver who strikes the rear of another vehicle will be found at fault, although there can be exceptions.
Failure to give way
Drivers who fail to give way at intersections, roundabouts or when entering traffic may be responsible if that failure causes a collision.
Running red lights or stop signs
Ignoring traffic control devices is one of the clearest indicators of negligence and frequently results in liability being assigned to the offending driver.
Unsafe lane changes
Changing lanes without ensuring it is safe to do so can make a driver responsible for any resulting collision.
Reversing accidents
Drivers reversing from driveways, parking spaces or loading areas generally have a duty to ensure the path is clear before moving.
Although these situations often appear straightforward, insurers will still consider all available evidence before determining liability.
When Fault Is Shared Between Both Drivers
Not every accident is entirely one driver’s responsibility. Sometimes both motorists contribute to the collision through separate acts of negligence.
Examples include:
- One driver speeding while another fails to give way.
- Both drivers changing lanes simultaneously.
- One driver making an unsafe manoeuvre while the other fails to take reasonable action to avoid the collision.
Where responsibility is shared, liability may be apportioned between the drivers. Depending on the circumstances, one driver might be considered 70% responsible while the other is 30%, or another proportion that reflects each person’s contribution to the accident.
Shared fault can affect how repair costs, insurance recoveries and other losses are allocated. This is why gathering comprehensive evidence remains important even when you believe the other driver was mostly responsible.
What Happens if the Other Driver Denies Responsibility?
It’s not uncommon for drivers to disagree about who caused an accident. A denial of responsibility does not automatically prevent liability from being established.
When fault is disputed, insurers don’t simply take either driver’s word for it. They investigate the claim independently and weigh all the available evidence — a process set out in the next section — before deciding who was responsible.
A denial also doesn’t mean you have to go without transport in the meantime — eligibility for a replacement vehicle can often be assessed while insurers continue investigating (see below).
Some disputes are resolved quickly, while more complex cases may require additional investigation or negotiations between insurers before liability is formally accepted.
Can You Still Get a Replacement Vehicle Before Fault Is Finalised?
If you’ve been involved in a not-at-fault accident, I’m In The Right may be able to assess your eligibility straight away, even if you’re unsure who was at fault. We can assess your eligibility for a like-for-like replacement vehicle. For eligible drivers, replacement vehicles are often dispatched within 15 minutes of approval, helping minimise disruption after an accident.
If you’re unsure whether you qualify, it’s worth contacting I’m In The Right as soon as possible rather than waiting. Delays in arranging replacement transport can make everyday activities such as commuting, school drop-offs or running a business much more difficult.
What if There Isn’t Enough Evidence to Prove Fault?
Not every accident leaves behind clear evidence. Sometimes there are no witnesses, no dash cam footage and conflicting versions of events from the drivers involved.
When this happens, insurers will assess all available information to determine whether liability can be established. They may consider:
- The location and extent of vehicle damage.
- The consistency of each driver’s account.
- Road layout and traffic controls.
- Any available CCTV footage.
- Mechanical inspections where relevant.
- Previous evidence gathered during the investigation.
If the available evidence is inconclusive, insurers may be unable to confidently determine that one driver was solely responsible. In some cases, liability may be shared between both parties or each insurer may manage its own customer’s claim in accordance with the applicable policy.
This is why collecting evidence immediately after an accident is so important. Even a few extra photographs or an independent witness can make a significant difference later.
Common Mistakes That Can Weaken Your Claim
Many drivers unintentionally make mistakes after an accident that can make proving fault more difficult.
Some of the most common include:
Admitting fault too early
It’s natural to apologise after an accident, even when you aren’t responsible. However, avoid making definite statements about who was at fault before all the facts have been established. Most people aren’t insurance or accident experts, so they may assume they were responsible without realising there are factors that can affect how liability is assessed.
Failing to collect evidence
Leaving the scene without taking photographs or obtaining witness details can make it much harder to support your version of events.
Forgetting to save dash cam footage
Many dash cams automatically overwrite older recordings. Saving the footage immediately can prevent valuable evidence from being lost.
Not reporting the accident promptly
Delays in notifying insurers or accident management providers can slow the investigation and make it harder to gather reliable evidence.
Providing inconsistent information
Always give an accurate and truthful account of what happened. Small inconsistencies between different statements can complicate the investigation.
Repairing the vehicle too early
If repairs begin before damage has been documented or assessed, important evidence may no longer be available.
Avoiding these mistakes can improve the efficiency of the claims process and help establish liability more effectively.
How Long Does It Take to Determine Fault?
There is no fixed timeframe for determining fault after a car accident. Some straightforward claims are resolved within days, while more complex disputes can take weeks or even several months.
Factors that influence the timeframe include:
- Whether both drivers agree on what happened.
- The availability of witnesses.
- Dash cam or CCTV footage.
- Police involvement.
- The complexity of the accident.
- How quickly insurers receive the required information.
If additional evidence needs to be obtained or insurers disagree about liability, the process may take longer.
Responding promptly to requests for information and providing complete documentation can help reduce unnecessary delays.
What Happens After Fault Has Been Established?
Once liability has been determined, the next steps generally become much more straightforward.
Depending on the circumstances, this may include:
- Repairing your vehicle.
- Settling insurance claims.
- Recovering repair and hire costs.
- Finalising replacement vehicle arrangements.
- Closing the claim once all outstanding matters have been resolved.
For eligible not-at-fault drivers using accident management services, the replacement vehicle is typically retained until repairs are completed or, if the vehicle is declared a total loss, until the insurance claim is settled. Once your own vehicle is ready or the claim is finalised, the replacement vehicle is collected and any remaining paperwork and cost recovery are handled on your behalf.
If you’ve been in a not-at-fault accident, get in touch with the I’m In The Right team — available 24 hours a day, 7 days a week — to check your eligibility and get back on the road while your claim is sorted.
