What Is a Side-Swipe Accident?
A side-swipe accident occurs when two vehicles make contact along the sides of their bodies rather than from the front or rear. This type of collision usually happens while vehicles are travelling in the same direction and often involves lane positioning errors or unsafe manoeuvres.
A sideswipe car accident typically occurs when:
- One driver drifts out of their lane without realising
- A driver attempts to change lanes without properly checking mirrors or blind spots
- Two vehicles move toward the same lane at the same time
Because these incidents involve side contact, the damage is usually visible along doors, panels, or mirrors.
While many side swipe accidents happen at lower impact angles, they can still lead to serious consequences, especially if one vehicle is forced out of its lane or into another car.
Understanding what defines a side swipe collision is important, as it directly affects how fault is assessed and what steps you should take next if you’re involved.
Who’s Usually at Fault in a Side-Swipe Accident?
In most cases, the driver who leaves their lane is considered at fault in a side-swipe accident.
Australian road rules require drivers to ensure it is safe before moving into another lane. This means:
- Checking mirrors and blind spots
- Indicating intentions clearly
- Only changing lanes when there is enough space
If a driver fails to do this and hits a vehicle already in that lane, they are generally responsible for the collision.
For example:
- If you move into another lane and sideswipe a car already travelling in that lane, you will likely be at fault
- If another driver merges into your lane and hits your vehicle, they are typically at fault
The key principle is simple: the vehicle already established in the lane usually has the right of way.
However, fault is not always automatic. In some cases, liability may be shared or disputed—for example, if the other driver was speeding, driving unpredictably, or performing an illegal manoeuvre. In these situations, evidence such as dashcam footage or witness statements can play an important role in determining fault.
Why Changing Lanes Is the Key Issue in Most Side-Swipe Crashes
Lane changes are at the centre of most side-swipe accidents because they create moments of uncertainty between drivers.
Unlike steady driving, changing lanes requires quick judgement about speed, distance, and timing. Even a small miscalculation can lead to contact between vehicles travelling side by side.
Side-swipe accidents commonly occur when:
- A driver misjudges the gap between vehicles
- Another vehicle is in a blind spot
- Traffic conditions change suddenly
- Two drivers attempt to move into the same space at the same time
These situations are especially common in heavy traffic, where gaps are limited and decisions must be made quickly.
It’s also important to understand that using your indicator does not give you the right of way—it only signals your intention. The responsibility to move safely still remains with the driver changing lanes.
What Happens If Both Drivers Move Into the Same Lane at the Same Time?
When two drivers attempt to enter the same lane simultaneously and collide, fault becomes more complex.
In these situations:
- Both drivers have a duty to check that the lane is clear
- Both must give way before moving
- Both may have failed to maintain proper awareness
As a result, responsibility may be shared between both drivers.
Insurance companies and investigators will typically assess:
- Who entered the lane first
- Whether either driver indicated properly
- Whether either driver failed to keep a proper lookout
If it cannot be clearly determined who was primarily responsible, liability may be split based on each driver’s level of negligence. In some cases, insurers may assign a percentage split (for example, 70/30) depending on each driver’s contribution to the accident.
This can affect how costs are recovered and how insurance claims are handled, making clear evidence and documentation especially important.
How I’m In The Right Can Help You Stay on the Road if you’re not at fault
If you’ve been involved in a not-at-fault side swipe accident, you may be entitled to a replacement vehicle while your car is being repaired or assessed.
I’m In The Right specialises in helping eligible not-at-fault drivers get back on the road quickly without the stress of managing the process alone.
Key benefits include:
- No out-of-pocket hire costs for eligible drivers, with costs typically recovered from the at-fault party’s insurer
- Like-for-like replacement vehicles, including luxury and commercial options
- Fast dispatch, often within 15 minutes of approval
- Flexible hire period until repairs are completed or the claim is resolved
- Full support with insurer communication and paperwork
From compact cars to SUVs, luxury and commercial vehicles are available, and once approved, a replacement vehicle can be delivered directly to your location—helping you maintain your routine without disruption.
6. Who’s at Fault if a Truck Sideswipes You in Its Blind Spot?
Accidents involving trucks can raise additional concerns, particularly around blind spots.
Large vehicles have significantly larger blind spots than standard cars, especially:
- Along the sides of the trailer
- Directly behind the truck
- Near the front corners
However, blind spots do not remove responsibility.
If a truck driver changes lanes and sideswipes your vehicle, they are typically at fault because:
- As with any lane change, the responsibility remains with the driver moving into the lane
- They must account for their vehicle’s blind spots
- They have a higher duty of care due to the size of their vehicle
That said, fault could be shared or disputed if:
- You were travelling in a known blind spot for an extended period
- You were overtaking unsafely
- There were sudden or unpredictable movements from either vehicle
Each case depends on the specific circumstances, but the general rule still applies: the driver changing lanes must ensure it is safe to do so.
When Fault in a Side Swipe Accident Is Not Clear-Cut
Not every side swipe accident has an obvious answer. In some cases, fault becomes difficult to determine due to conflicting accounts or unclear circumstances.
Situations where responsibility may be difficult to determine include:
- Both drivers claim they were already in the lane
- There is no clear evidence showing how the collision occurred
- Road markings or conditions made lane positioning ambiguous
- One or both drivers failed to indicate properly
In these cases, insurers and investigators rely on a broader assessment of driver behaviour and responsibility under Australian road rules.
When fault cannot be clearly assigned, outcomes may include:
- liability divided between drivers
- Delays in claim resolution
- Greater reliance on supporting evidence
This is why documenting the incident properly is critical.
The Evidence That Helps Prove Who Caused a Sideswipe Collision
Evidence plays a major role in determining who is at fault in a sideswipe car accident.
Key forms of evidence include:
- Dashcam footage showing the lane positions and movements of each vehicle
- Photos of vehicle damage, which can indicate the angle and direction of impact
- Road markings and signage, helping establish who had right of way
- Witness statements from other drivers or pedestrians
- Police reports, particularly in more serious incidents
Dashcams are especially valuable, as they provide a real-time, unbiased account of events.
Without strong evidence, fault may come down to competing versions of events, making the process longer and more complex.
What to Do Straight Away After Your Car Has Been Side Swiped
If your car has been side swiped, taking the right steps immediately can protect both your safety and your position if fault is disputed.
Start with the basics:
- Check for injuries and ensure everyone is safe
- Move vehicles out of traffic if it is safe to do so
- Exchange details with the other driver (name, contact, licence, insurer)
- Take photos of the damage, positions of vehicles, and surrounding area
- Speak to any witnesses and collect their details
Avoid admitting fault at the scene, even if you believe you may be responsible. Fault is determined later based on evidence and road rules.
At this stage—especially if you believe you were not at fault—it’s also important to understand your options for staying mobile while your vehicle is off the road.
Going Through an Insurer vs Using I’m In The Right After a Not-at-Fault Accident
After a side swipe accident, many drivers assume they must go through their insurer—but this is not always the most practical option if you were not at fault.
Going through an insurer:
- You may be offered an accident hire car under your policy (if included)
- Some policies limit replacement vehicles to a short period (e.g. around two weeks)
- You may need to pay an excess upfront, depending on circumstances
- The replacement vehicle may not match your original car—for example, if you had a luxury or commercial vehicle (such as a ute), you may be offered a more basic or limited option depending on availability
Using I’m In The Right:
- No vehicle hire costs for eligible not-at-fault drivers
- A like-for-like replacement vehicle similar to your own
- Vehicle use for the full duration your car is off the road—not just a limited period
- The company handles communication with the at-fault insurer and manages recovery of costs
While both pathways are available, many not-at-fault drivers choose a service that reduces out-of-pocket costs and administrative burden.
If you’re unsure which option is right for your situation, our team handles these matters quickly and can be contacted 24 hours a day, 7 days a week to discuss your circumstances and next steps.
Common Mistakes Drivers Make After a Side Swept Accident
What you do after a side swipe accident can significantly impact your claim and how fault is determined.
Common mistakes include:
- Admitting fault at the scene without full information
- Failing to collect the other driver’s details
- Not taking photos of the damage or road conditions
- Leaving the scene too quickly without documenting evidence
- Delaying reporting the incident
Some people also assume they must handle everything through their insurer without exploring other options—particularly if they’re not at fault.
Taking a few extra minutes at the scene to gather evidence can make a substantial difference later.
Your Rights If Your Sideswiped Car Is Off the Road
If your car has been sideswiped and is no longer drivable, your rights depend largely on whether you were at fault.
As mentioned earlier, if you were not at fault, you may be entitled to:
- Repairs paid for by the at-fault driver or their insurer
- Recovery of reasonable costs associated with the accident
- A comparable replacement vehicle while your car is unavailable
Under Australian law, not-at-fault drivers can recover the cost of a like-for-like hire vehicle for the period their car is off the road.
This means you should not be left without transport simply because another driver caused the accident.
How to Avoid Being Involved in a Side Swipe Car Accident
While not all accidents are preventable, there are practical steps you can take to reduce your risk of being involved in a side swipe collision.
Key safety habits include:
- Always checking mirrors and blind spots before changing lanes
- Using your indicator early to signal your intentions
- Avoiding lingering in other vehicles’ blind spots—especially trucks
- Maintaining a steady speed and predictable driving behaviour
- Being cautious in heavy traffic where lane changes are frequent
Defensive driving is essential. Anticipating the actions of other drivers can help you avoid situations where a sideswipe accident is likely.
Frequently Asked Questions About Side-Swipe Accident Fault
Who’s at fault in a sideswipe accident?
Usually, the driver who leaves their lane without ensuring it is safe is at fault.
Who is at fault if both cars are changing lanes?
Fault may be shared if both drivers failed to give way or maintain proper awareness.
Who’s at fault if a truck sideswipes me in their blind spot?
Typically, the truck driver is at fault if they changed lanes without ensuring it was clear, although circumstances can affect the outcome.
Can I get a replacement car if I’m not at fault?
Yes. If you were not at fault and the other driver is insured, you may be eligible for a like-for-like replacement vehicle at no cost, with hire costs recovered from the at-fault driver’s insurer.
