May is Motorcycle Awareness Month, and the single most important crash pattern every driver should understand this May is the left-turn collision. A car turning left across the path of an oncoming motorcycle causes more fatal crashes than any other type of collision involving a bike. The rider has almost no time to react, and the physics of the impact favor the car every time.
California riders face this danger at every intersection. The state's year-round riding weather, heavy freeway and arterial traffic, and wide multi-lane roads create constant opportunities for left-turn crashes. El Segundo intersections on Sepulveda Boulevard, PCH, and Rosecrans Avenue see these wrecks regularly, and May is when they spike as riders take advantage of spring weather.
This post explains why Motorcycle Awareness Month puts a spotlight on left-turn crashes, why drivers keep missing motorcycles at intersections, where these crashes hit hardest in the South Bay, what California law says about fault, and how riders can protect themselves when a driver turns directly into their path.
If you've experienced an injury due to someone else's negligence, contact Bloom Injury Law today for a free consultation. Call (310) 525-5985 or contact us online.
May is National Motorcycle Safety Awareness Month, and left-turn collisions sit at the center of almost every national safety campaign tied to it. The reason is simple. Left-turn crashes are the most common way riders die on American roads, and they are also the most preventable.
NHTSA, the California Office of Traffic Safety, and the California Highway Patrol all build their May messaging around getting drivers to slow down and look twice at intersections. The "Look Twice, Save a Life" campaign exists because of left-turn crashes. The "Start Seeing Motorcycles" message targets the same problem from a different angle.
Motorcycle Awareness Month works because it repeats one clear instruction to drivers: before you turn left, check for motorcycles. That single habit prevents more rider deaths than any other change a driver can make.
Left-turn crashes account for a huge share of fatal motorcycle accidents nationwide. NHTSA data consistently shows that collisions between a motorcycle going straight and a car turning left are among the most common fatal crash patterns on American roads.
California crash data from the Office of Traffic Safety points to the same problem. Intersection crashes make up the majority of fatal motorcycle collisions in the state, with left-turn collisions leading the list. California's dense population, heavy traffic, and year-round riding season all push intersection crash numbers higher than in most states.
The numbers tell a simple story. When a car turns left into a motorcycle, the rider usually loses. The car has steel, airbags, and crumple zones. The rider has a helmet and whatever gear they put on that morning.
The answer is not that drivers don't care. In almost every left-turn crash, the driver genuinely believed the path was clear. The problem is how the human brain processes what the eye actually sees.
Drivers scan for car-sized objects. When the brain doesn't register a vehicle in the oncoming lane, the driver commits to the turn. A motorcycle is small enough to slip through that visual filter entirely. Researchers call it "looked but failed to see." The driver looked right at the bike and didn't register it.
Several factors make the problem worse at California intersections:
None of these reasons excuse the driver. California law requires drivers to yield to oncoming traffic before turning left, regardless of what they did or didn't see.
Los Angeles County has specific intersections where left-turn crashes happen over and over. Riders who use these corridors know the trouble spots, and drivers who live here should too.
Sepulveda Boulevard running through El Segundo is the most active corridor for left-turn motorcycle crashes in the area. The stretch from El Segundo Boulevard through Rosecrans Avenue and Mariposa Avenue has multiple signalized intersections where drivers turn left across heavy oncoming motorcycle traffic. The intersection of Sepulveda and Rosecrans sees regular crashes involving riders commuting through the South Bay.
Rosecrans Avenue is another hot spot. The approaches to Aviation Boulevard, Douglas Street, and the 405 ramps all see left-turn crashes year after year. Heavy commuter traffic mixes with weekend riders heading to Manhattan Beach and Hermosa Beach, and drivers rushing to make turns miss motorcycles in the process.
Pacific Coast Highway has the same pattern. Drivers turning left into neighborhoods, beach access points, and businesses miss motorcycles coming the other way, particularly near Grand Avenue and Imperial Highway. The 105 on-ramps at Sepulveda and Nash create merge conflicts where drivers turning left across traffic fail to spot riders.
Imperial Highway, Aviation Boulevard, and El Segundo Boulevard are also known problem corridors. Drivers cutting left across oncoming lanes to reach office parks, parking lots, or make U-turns put riders at serious risk. The heavy business district traffic around LAX and the aerospace corridor pushes accident rates higher.
California law is clear. A driver turning left must yield to oncoming traffic, including motorcycles. California Vehicle Code Section 21801 puts the responsibility squarely on the turning driver. "I didn't see the motorcycle" is not a defense that holds up in court.
That said, insurance companies still try to shift blame onto riders. They argue the rider was speeding, rode into the intersection at the wrong moment, or failed to react in time. They also try to blame lane splitting riders for being in an unexpected place, even though lane splitting is legal in California.
California is a pure comparative fault state. That means your recovery is reduced by your share of the blame, but even a rider found 90% at fault can still recover 10% of damages. This is more rider-friendly than what most states use, but insurance adjusters still push hard to maximize the rider's assigned fault percentage to cut settlements.
Evidence defeats those tactics. A police report showing the driver failed to yield, witness statements confirming the rider had the right of way, photos of the intersection, and traffic camera footage all help establish fault. Crash reconstruction can prove exactly how fast the rider was going and where the driver's sight lines should have caught the bike.
Riders can't control what drivers do. What they can control is how they approach every intersection where a left-turn crash could happen.
These habits don't excuse a driver who fails to yield. They give riders the best possible chance to survive when drivers do.
Get medical care immediately. Left-turn crashes often cause serious injuries, including head trauma, broken bones, internal bleeding, and spinal damage. Adrenaline hides pain at the scene. An ER visit creates a medical record that ties your injuries to the crash.
Call the police and make sure an official crash report is filed. The report documents the driver's statements, the position of the vehicles, and the officer's assessment of fault. In left-turn cases, that report is often the single strongest piece of evidence.
Photograph the scene if you can. Get pictures of both vehicles, the intersection layout, traffic signals, skid marks, and debris. Record the names and phone numbers of any witnesses. Eyewitnesses to left-turn crashes are powerful because they saw what the driver claims they didn't.
Do not give a recorded statement to the other driver's insurance company. Adjusters are trained to pull quotes that sound like admissions of fault. A simple "I was going a little fast" gets used to push up your assigned fault percentage and cut your recovery.
California gives riders two years from the date of the crash to file a personal injury lawsuit. For claims against government entities under the California Government Claims Act, you must file within six months. Our motorcycle accident attorneys in El Segundo recommend speaking with a lawyer well before any deadline closes.
Left-turn crash cases look simple on paper. The driver turned. The rider had the right of way. The driver is at fault. In practice, insurance companies fight these cases aggressively because the payouts are often high.
A motorcycle accident lawyer in El Segundo who handles left-turn cases knows what tactics to expect and how to counter them. That means working with crash reconstruction professionals, tracking down traffic camera footage from nearby businesses, and interviewing witnesses before memories fade.
It also means knowing which local intersections have a history of left-turn crashes and using that pattern evidence to strengthen the case. A driver who turned left across oncoming traffic at Sepulveda and Rosecrans is part of a documented problem, and that context matters in negotiations.
Our motorcycle accident lawyers in El Segundo fight to make sure the driver who failed to yield is the one held responsible, not the rider who had the right of way.
May is Motorcycle Awareness Month, and left-turn crashes are why the campaign exists. If a driver turned left in front of you on Sepulveda Boulevard, PCH, Rosecrans Avenue, or anywhere in the South Bay, call Bloom Injury Law today. Our El Segundo motorcycle accident attorneys will review your case for free and fight for the recovery you deserve.
If you've experienced an injury due to someone else's negligence, contact Bloom Injury Law today for a free consultation. Call (310) 525-5985 or contact us online.
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