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  • Rear-End Collision Fault Laws in California

Rear-End Collision Fault Laws in California

TL;DR: Everyone assumes the rear driver is always at faultโ€”but California law isnโ€™t that black and white. This post breaks down the rebuttable presumption, explains comparative negligence (with a real example where we reduced a clientโ€™s blame from 70% to 20%), and shows how evidence like dashcams and expert inspections can flip the script. If youโ€™ve been rear-endedโ€”or accused of causing oneโ€”donโ€™t say a word until youโ€™ve spoken with a real attorney. The clockโ€™s tickingโ€”two years goes fast.

Is the Rear Driver Always at Fault?

Not always. California law does create a rebuttable presumption that the rear driver is at fault in a crash. That means the law starts by assuming the person who hit you from behind is responsible.

Butโ€”and this is importantโ€”that presumption can be overturned with the right evidence. Maybe the lead driver slammed on the brakes for no reason. Maybe their brake lights were out. Maybe it was a chain-reaction pileup. Fault gets messy fast.

Comparative Negligence: Californiaโ€™s Blame-Sharing Rule

California uses a pure comparative fault system (Civil Code ยง1714). That means even if youโ€™re partially responsible, you can still recover damagesโ€”just reduced by your percentage of fault.

Example: If a jury finds you 20% at fault in a crash where you suffered $100,000 in damages, youโ€™d still walk away with $80,000.

Pro Tip: We recently helped a Riverside teacher who was rear-ended after she brake-checked someone tailgating her. The insurance company blamed her 70%. We proved it was a reasonable response to harassment. Her fault was reduced to 20%, and she walked away with a $340,000 settlement.

Examples That Flip the Script

  • Sudden stops: The front driver brakes hard without warningโ€”for example, to avoid a squirrel or make a last-second turn.
  • Broken brake lights: If your lights arenโ€™t working, the rear driver canโ€™t anticipate your stop.
  • Chain-reaction pileups: In multi-car crashes, fault might rest with the person who started itโ€”not the last car in the chain.
  • Brake-checking: Aggressively slamming brakes in front of another driver can shift fault.
  • Mechanical failures: If the rear driverโ€™s brakes fail and they can prove it was unforeseeable, fault might shift.

Proof That Flips the Script

Dashcam footageโ€”seriously, everyone should have oneโ€”can be the difference between winning and losing. Itโ€™s not the only thing that matters, but it can stop lies cold.

Other helpful evidence includes:

  • Eyewitness statements
  • Police reports and body cam footage
  • Vehicle inspections
  • Accident reconstruction experts
  • Photos of the damage and scene

What Can You Recover?

Damages typically include:

  • Medical expenses
  • Lost income (past and future)
  • Vehicle repair or replacement
  • Pain and suffering
  • Emotional distress
  • Permanent injury or disability

What If You Were Partially At Fault?

Still call a lawyer. Maybe you tapped the brakes too quickly, or looked at your phone for a second. That doesnโ€™t erase your right to compensationโ€”it just reduces it. And with a strong case, we can often reduce your share of the blame even further.

Two-Year Statute of Limitations

In California, you generally have two years from the date of the accident to file a personal injury claim. Miss that window, and you may lose your right to recover anything. The clockโ€™s tickingโ€”two years goes fast.

Need Legal Help?

At West Coast Trial Lawyers, weโ€™ve handled over 3,000 rear-end collision cases and recovered more than $1.5 billion for our clients. When you contact us, youโ€™ll speak with a real attorneyโ€”not a call center rep. Weโ€™re available 24/7, and it wonโ€™t cost you a dime unless we win.

Contact West Coast Trial Lawyers today for a free consultation.


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