Rear-End Collision Law in California

CVC 21703: California's Rear-End Fault Presumption

California Vehicle Code Section 21703's prohibition on following too closely generates a rebuttable presumption of fault against the rear driver whenever a rear-end collision occurs in California. This presumption is the single most important legal fact in California rear-end litigation.

The presumption can be rebutted by evidence of a sudden, unexpected stop by the lead driver or another emergency. California courts have consistently held that ordinary traffic deceleration, stopping at lights, and congestion-related stops are foreseeable events that the following driver must accommodate under CVC 21703. The sudden stop defense succeeds only in unusual circumstances.

Statute of Limitations

Two years from the date of the accident under CCP Section 335.1. Government entity claims (Caltrans, city vehicles, transit agencies): six months under Government Code Section 945.4. Minors: tolled until age 18 under CCP Section 352. Missing either deadline permanently bars the claim.

California Pure Comparative Fault

California follows pure comparative fault from Li v. Yellow Cab Co. (1975) 13 Cal.3d 804. Even if the rear-end victim was partly at fault, recovery is reduced proportionally but not eliminated. Proposition 51 (Civil Code Section 1431.2) modifies joint-and-several liability in multi-defendant cases: each defendant pays their proportionate share of non-economic damages while remaining jointly and severally liable for economic damages.

California Auto Insurance Requirements

California Vehicle Code Section 16056 (as amended by SB 1107, effective January 1, 2025) requires minimum liability insurance of $30,000 per person / $60,000 per accident / $15,000 property damage. These minimums are frequently insufficient for serious rear-end injuries. Uninsured motorist coverage under Insurance Code Section 11580.2 provides recovery when the rear driver has no insurance. California requires UM/UIM coverage to be offered with every auto policy.

The Eggshell Plaintiff Rule in Rear-End Cases

California's eggshell plaintiff rule requires the at-fault rear driver to compensate the full extent of injury, even if a pre-existing condition made the victim unusually susceptible. A rear-end victim with pre-existing cervical degenerative disc disease can recover for the full aggravation caused by the collision. The rule is particularly significant in whiplash and soft-tissue cases where the insurer argues the injury predated the accident.

Damages in California Rear-End Cases

California does not cap damages in personal injury cases. Rear-end collision victims recover: medical expenses (past and future), lost wages and earning capacity, vehicle property damage (including diminished value), pain and suffering (uncapped), emotional distress, loss of enjoyment of life, and punitive damages under Civil Code Section 3294 for DUI, intentional brake-check, or egregious recklessness.