What Speed Do Airbags Deploy?

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Airbag Deployment Injuries

The front airbag in your car is designed to deploy at 10-12 mph with a rigid wall if unbelted. When wearing your seatbelt, it deploys at approximately 16 mph.

When you're involved in a serious collision, your front airbags activate in 20-30 milliseconds at approximately 200 mph.

This near-instantaneous airbag deployment is necessary in a crash to provide the safety you expect.

In some cases the deployment velocity of airbags can cause injuries to victims.

They are designed to become active when driving certain speeds.

Sometimes a faulty airbag deploys too late to provide the protection it was designed for.

Sometimes they deploy without an actual collision and injure victims.

In some scenarios the safety systems can fail to detect the crash and the airbags don't deploy - causing occupants to suffer more severe injuries than they otherwise would have.

Good accident lawyers will typically investigate deployment timing and technical evidence if an airbag failure is suspected of contributing to your injuries after a crash.

The airbag must deploy, fully inflate, and begin deflating at precisely the right moment to prevent occupants from hitting the steering wheel, dashboard, or other hard surfaces in the vehicle.

A failure to deploy properly can result in more severe injuries than victims would have otherwise sustained in a crash.

 

"Compensation plays a critical role helping injury victims get back on their feet after an accident..."

 


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The Deployment Sequence: How Airbags Work in Milliseconds

The airbag deployment process follows a precisely orchestrated sequence:


  • Crash Detection (0-15 milliseconds): Sensors detect rapid deceleration forces exceeding predetermined thresholds
  • Signal Transmission (15-20 milliseconds): Electronic signals trigger the inflation module explosives
  • Chemical Reaction (20-25 milliseconds): Sodium azide or similar compounds rapidly convert to nitrogen gas
  • Full Inflation (25-30 milliseconds): The airbag fully expands to create a protective cushion
  • Controlled Deflation (30+ milliseconds): Vents allow gradual deflation as occupant contacts the airbag

The entire sequence process occurs within 50 milliseconds of the initial impact, approximately 1/20th of a second. This timing is critical for maximizing safety while minimizing airbag deployment injuries.

 

 

Different Airbag Types and Their Deployment Speeds

Modern vehicles contain multiple airbag systems, each with specific deployment characteristics:


Front Driver and Passenger Airbags


  • Deployment Speed: 150-200 mph (241-322 km/h)
  • Deployment Time: 20-30 milliseconds after impact detection
  • Distance Traveled: Approximately 12-16 inches from storage to full inflation

Side-Impact and Curtain Airbags


  • Deployment Speed: Up to 200 mph (322 km/h)
  • Deployment Time: 10-20 milliseconds (even faster than frontal airbags)
  • Reason for Increased Speed: Less distance between occupants and potential impact zones

Knee Airbags and Other Supplemental Systems


  • Deployment Speed: 150-200 mph (241-322 km/h)
  • Deployment Time: 20-40 milliseconds depending on system design
  • Function: Prevent lower extremity injuries from dashboard impacts to knees and legs

When unnecessary injuries are caused either by the airbags failing to deploy in time, at all, or the deployment itself causes injury it can give rise to legal claims.

Compensation for Injuries Caused an Airbag That Fails to Deploy

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If you've suffered injuries related to airbag deployment, our experienced legal team can help determine if you have a legal claim.

Airbag claims come in three shapes, and each is a product liability case that runs alongside any claim against the at-fault driver:


  • Failure to deploy: The crash met the deployment thresholds described above and the bag never fired, leaving you to take an impact the system was sold to prevent. The vehicle's event data recorder logs whether a deployment command was sent, which makes the failure provable.
  • Late or partial deployment: A bag that fires milliseconds late or under-inflates can be worse than no deployment at all, striking an occupant who has already moved into its path.
  • Inadvertent or overly aggressive deployment: Bags that fire without a qualifying impact, or with defective inflators, cause facial fractures, eye injuries, burns, and worse. Defective inflators have driven the largest recalls in automotive history, covering tens of millions of vehicles.

Preserve the vehicle. The airbag module, the inflator, and the event data recorder are the case. Do not let the car be repaired, salvaged, or scrapped before a lawyer and an expert have inspected it; once the vehicle is gone, the defect claim usually goes with it.

Our accident attorneys will investigate the crash, review the deployment data, and determine whether a faulty airbag played a role in your injuries. A product claim against the manufacturer can add a well-insured defendant to your case, which matters most when the at-fault driver carries minimum limits.



Airbag Failures FAQ

Q:    What are the most common types of airbag failures that lead to injury claims?

A:    Three patterns account for most airbag injury claims: a failure to deploy in a crash that met the deployment thresholds, a late or partial deployment that strikes an occupant already in motion, and deployment without a qualifying impact. Defective inflators that fire with excessive force or send fragments into the cabin are a fourth, and they have driven historic recalls.

Q:    How can I determine if my vehicle's airbags were subject to a recall or known defect?

A:    Our attorneys can investigate your airbag system and search the NHTSA recall database, service records, and manufacturer safety bulletins for any known issues for your make and model. You can also run your VIN through NHTSA's free recall lookup yourself in about a minute.

Q:    My airbags didn't deploy in a serious crash. Does that mean they were defective?

A:    Not automatically. Deployment depends on crash direction, deceleration forces, and sensor thresholds, and some serious-feeling impacts legitimately fall outside them. The vehicle's event data recorder shows what the sensors registered and whether a deployment command was sent, which is why preserving the vehicle for inspection is the first move, not the last.

Q:    Can I sue if the airbag itself injured me?

A:    Possibly. Airbags cause abrasions and bruising in normal operation, and that alone is not a claim. Claims arise when a defect made the deployment unnecessary or unreasonably violent: firing without an impact, inflator ruptures, or deployment forces beyond design specifications. The injury pattern and the deployment data usually tell the difference.

Q:    Who pays in an airbag failure case: the other driver or the manufacturer?

A:    Potentially both. The at-fault driver remains liable for causing the crash, while the manufacturer can be liable for the portion of your injuries the airbag failure added. Running the claims together matters most when the driver carries minimum coverage, because the product claim reaches a defendant with real resources.

Contact a Good Car Accident Attorney Today

Victims of airbag-related injuries may be eligible for substantial compensation for the unnecessary harm they suffered.

Our personal injury attorneys have a proven track-record of securing the compensation crash victims deserve.

If you've been injured as a result of a defective airbag you should speak with a lawyer immediately.

Tell us about your car accident so we can help you secure the settlement you deserve. Call Lawsuit Legal at (888) 713-6653 for a free consultation as soon as possible.

 

 

 

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