Fault and Comparative Negligence in a California Crash in West Covina, CA How Percentages Are Assigned

Percentages, not verdicts of character

The rule comes from a 1975 California Supreme Court decision that threw out the old all-or-nothing approach, under which a claimant who contributed anything to a crash recovered nothing. The court replaced it with liability in direct proportion to fault, so a person found twenty percent responsible still collects eighty percent of proven losses. There is no cutoff. A claimant assessed at seventy percent still has a claim worth thirty percent of the damages that can be proven, which is why insurers argue over ten-point increments rather than over blame in the abstract.

The split that decides who pays what

Civil Code section 1431.2 divides damages into two buckets and treats them differently. Economic losses -- medical costs, lost earnings, property repair, replacement services -- remain jointly owed, so any defendant found even partly at fault can be pursued for the whole economic figure. Noneconomic losses, the statute's list of pain, suffering, inconvenience, mental suffering, emotional distress, loss of enjoyment, disfigurement and physical impairment, are several only: each defendant owes them strictly in proportion to that defendant's own percentage. In a three-vehicle chain on Azusa Avenue, the practical consequence is that fighting over five percentage points changes the noneconomic figure and leaves the medical figure untouched.

Where the first percentage gets written

In this city, the initial account usually comes from the West Covina Police Department, whose Traffic Unit finalizes the determination of fault and issues citations after a collision investigation. Freeway and unincorporated-area collisions go to the California Highway Patrol's Baldwin Park Area office instead. Neither determination binds a civil case. An officer works from statements, physical evidence and applicable Vehicle Code sections in the hour after the crash; a comparative-fault analysis later works from downloaded event data, signal timing, business camera footage and sometimes a reconstruction. The two often agree. When they do not, the report is a document to be explained rather than a result to be accepted.

What the local collision record suggests about apportionment

The City's roadway safety plan, adopted in 2022 on five years of collision data, counted 5,044 collisions and put automobile right-of-way violations third among primary causes at 17.5 percent, behind speed and turning movements, with signal and sign violations at 14.0 percent. Roughly 88 percent of collisions happened at or near intersections. Those two facts together explain most disputed-fault files here: right-of-way and signal cases are exactly the fact patterns where two drivers give incompatible accounts and where a percentage, rather than a winner, is the honest outcome. The same document flagged aggressive driving in 40.2 percent of collisions, a category that includes the speed-plus-lane-change combination that produces shared fault.

The evidence that moves a percentage

Numbers move on documents, not adjectives. Signal phasing and timing records for the intersection, obtained from the agency that operates the signal. Event data recorder downloads showing pre-impact speed, braking and throttle. Roadway photographs taken before the debris is swept. Statements from independent witnesses recorded within days, while sequence is still recoverable. Vehicle Code sections that apply to the specific movement, such as the basic speed law in section 22350, which requires a speed reasonable for conditions regardless of the posted number, or section 22107, which requires a signal before turning or moving laterally when other traffic may be affected. Each item narrows the range of defensible percentages.

Two mistakes that make apportionment worse

The first is arguing the crash instead of the damages. A claimant who spends every conversation on whose light was green, while medical records go uncollected and a wage loss stays undocumented, may win the fault argument and still hold a small claim, because the percentage multiplies a number that was never proven. The second is treating a recorded statement as a chance to be fair. Volunteered concessions about speed, distraction or "not really looking" convert into percentage points and are difficult to walk back later. Accuracy is required. Estimation under pressure is not.

If this is the argument in a specific file

The material worth gathering first is the collision report number, the responding agency, photographs of both vehicles and the roadway, any citation issued, and the names of witnesses who were not in either car. Both the two-year deadline for injury actions in Code of Civil Procedure section 335.1 and the shorter windows insurers apply to their own investigations run while that collection happens. This page describes California rules in general terms; it is not legal advice and it does not evaluate anyone's crash. Questions about how fault might be apportioned in one specific collision belong with the attorney who advertises on this site, reached at the number above.