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This content is for informational purposes only and is not intended to provide legal advice.
Intersections are where most serious crashes happen. That’s not an opinion. The National Highway Traffic Safety Administration has documented for years that roughly 40 percent of all crashes in the United States involve intersections, and a significant portion of fatal crashes happen at or near them.
Most people assume intersection accidents are simple. Somebody ran a red. Case closed. The reality is messier, the liability question is more complicated than it looks, and the person who gets hurt is often the last one to understand why.
Here’s How These Actually Happen
Red light running is the obvious one and it kills people. A driver blows through a light that’s been red long enough for cross traffic to be moving at speed. The physics of a broadside collision at 40 miles per hour are devastating. The person who ran the light is clearly at fault in the most straightforward sense, but straightforward doesn’t always mean easy to prove. Without camera footage or a witness who wasn’t in the crash themselves, it’s two drivers with two stories and a police report that may or may not capture what actually happened.
Left turns are their own category and they cause a staggering number of crashes. A driver turning left across oncoming traffic misjudges the speed of an oncoming vehicle or simply doesn’t see it clearly enough. The turning driver almost always bears the fault for this type of collision because they’re the one executing a movement that requires yielding. Almost always. There are exceptions, like when the oncoming driver was going significantly over the speed limit or ran a red to get there, and those exceptions matter to the fault calculation.
Yellow light decisions create disputes constantly. One driver swears they entered on yellow. The other driver says it had been red for two full seconds when the first car went through. Nobody has video. The intersection didn’t have a camera. Now two insurers are arguing about a color and a fraction of a second, and the person who got T-boned in the middle of the intersection is waiting for it to get resolved.
Failure to yield at stop signs. All-way stops require drivers to yield to whoever arrived first, which is a system that works fine when everyone follows it and produces crashes when they don’t. A driver who rolls a stop sign or misjudges whose turn it is creates a collision that often hits the other vehicle on the side, where passenger protection is weakest.
Distracted driving turns every intersection into a higher-risk event. A driver who’s looking at a phone has degraded reaction time and reduced awareness of everything happening around them. At an intersection with multiple inputs, moving pedestrians, cross traffic, turning vehicles, that fraction of a second of inattention is enough. And proving distraction requires phone records, which require legal process to obtain, which requires someone who knows how to ask for them.
Liability Isn’t Always One Driver
Sometimes it’s split. California uses pure comparative fault, which means your recovery gets reduced by your percentage of responsibility. At 20 percent at fault on a $100,000 claim, you collect $80,000. At 60 percent, you collect $40,000. There’s no cutoff where you get nothing, unlike some other states, but the percentage still costs you real money and insurers know that math better than you do.
When they’re disputing fault percentages, they’re not doing it out of intellectual curiosity. Every point they put on you saves their client money. Someone who was 10 percent responsible versus 30 percent responsible is a $20,000 difference on a $100,000 claim. The arguments they make about your speed, whether you were watching the road, whether you had time to avoid the collision, all of it is financial math dressed up as factual analysis.
Sometimes the at-fault driver wasn’t even the only responsible party. The government entity responsible for traffic signal maintenance can be liable when a malfunctioning signal caused or contributed to the crash. A construction company that obscured sight lines with improperly placed equipment can share fault. A vehicle manufacturer whose defective brakes prevented a driver from stopping in time can be brought in. Multi-party liability situations require knowing which entities to pursue and how to apportion responsibility between them.
What Determines How the Fault Fight Goes
Evidence. Specifically, evidence gathered before it disappears.
Traffic camera footage is the single most valuable piece of evidence in most intersection crashes. It shows exactly what the light was, exactly when each vehicle entered the intersection, and exactly what happened. It also gets overwritten. City and private traffic management systems typically cycle footage anywhere from a few days to a few weeks. If a camera caught your crash and nobody preserves that footage quickly, it’s gone.
Physical evidence at the scene disappears fast too. Skid marks show where braking started. The final positions of the vehicles before they got towed tell an engineer something about angles and speeds. Debris fields describe the point of impact. Get photographs of all of it before any of it gets cleaned up or towed away.
Witnesses who saw the whole thing from outside the cars are worth more than almost any other evidence because they have no stake in how it’s resolved. Get names and numbers before everyone drives off.
The police report captures the officer’s initial assessment of what happened and lists any citations issued. A citation for running a red light is a documented finding of fault. It’s not legally binding in the civil case but it carries real weight with adjusters and in negotiations.
Vehicle data matters increasingly in modern cars. Event data recorders in most passenger vehicles capture speed, braking, throttle position, and steering inputs in the seconds before a crash. That data requires preservation too, before the vehicle gets repaired or scrapped.
Who May Share the Fault That Most People Don’t Think About
The other driver is the obvious one. But in intersection accidents, government liability is worth looking at seriously.
California cities and counties have a duty to maintain traffic signals and road conditions that are reasonably safe. A signal that’s been malfunctioning for weeks and nobody fixed it, a crosswalk marking so faded it’s effectively invisible, a stop sign that got knocked down and never replaced, sight-line obstructions from overgrown vegetation on public land. These can all contribute to an intersection crash, and claims against government entities are possible though they come with specific procedural requirements and short timelines for notice.
If a government entity is involved in any way, the notice deadline in California can be as short as six months from the date of the crash. Miss it and that portion of the claim is gone regardless of how valid it was.
Pedestrians and Cyclists
Intersection accidents don’t only involve two cars. A pedestrian in a crosswalk who gets hit by a driver turning right on red who didn’t look has a personal injury claim. A cyclist who gets cut off by a left-turning vehicle has the same core legal framework, complicated by how California’s bike laws interact with traffic rules.
In both cases the injury severity is typically high because there’s no vehicle frame protecting the person, and the damages in these claims reflect that.
After the Crash
Call the police every time, including for crashes that seem minor. Get the report number.
Photograph the intersection itself, not just your vehicle. The signal heads, the signs, the lane markings, the sight lines, the overall layout. These things look different months later when someone’s trying to reconstruct what happened from photos.
See a doctor the same day even if you think you’re okay. Adrenaline masks symptoms. Neck and back injuries from impact frequently don’t fully present until the next morning. A gap between the crash and your first medical record is something the insurer will use to argue you weren’t seriously hurt.
Don’t give a recorded statement to the other driver’s insurer before you understand your injuries and before you’ve talked to someone who can advise you. That statement gets used to reduce what they pay you.
A Folsom car accident lawyer can look at the specific facts of your intersection crash, identify every potentially responsible party, and move quickly on the evidence preservation issues that determine whether the case is winnable. Check the firm’s client reviews through their Yelp profile before you decide to reach out.
Most personal injury attorneys in California work contingency. Nothing upfront. Free consultation. The evidence window after an intersection crash is short and the decisions you make in the first few days matter more than most people know before they’re already past them.
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