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ONTARIO, San Bernardino County, Calif., Sept. 18, 2026 — A motorcyclist was hurt Thursday afternoon, September 17, in a crash on northbound Interstate 15 just south of Interstate 10 in Ontario, according to authorities. The rider was reportedly conscious after going down in the roadway.
The California Highway Patrol received the first reports shortly before 2:22 p.m., dispatch logs show. Authorities said the motorcycle was involved with at least one other vehicle, and radio traffic referenced a possible third car, though the sequence of impact has not been confirmed. One log entry described the motorcycle striking the rear of a sedan, but that detail was not verified in later updates.
The rider was able to get up and walk to the center divider after the crash, and was said to be conscious while awaiting medical evaluation. Emergency crews requested a transfer to fire medical personnel for further care.
The collision blocked multiple lanes of northbound I-15 for a period, backing up traffic near the I-10 interchange.
The cause of the collision remains under review. We hope those who were hurt recover fully.
Where Motorcycle Crashes on Freeway Interchanges Tend to Happen
Interchange approaches, like the stretch where northbound I-15 merges toward I-10, tend to produce more motorcycle collisions than open highway sections. Traffic slows unevenly as vehicles merge, brake, or shift lanes to reach a connector, and a motorcycle's smaller profile makes it harder for drivers ahead to judge closing speed in that kind of stop-and-go pattern.
Similar risk builds at unsignalled intersections and on wide urban arterials, where drivers making turns or lane changes often misjudge how fast a motorcycle is approaching. Undivided two-lane roads carry their own version of the problem: less separation between opposing traffic and fewer chances to recover from a misjudged gap.
According to the California Office of Traffic Safety, 33 motorcyclists who died were not wearing helmets in 2023. That figure points to how much helmet use matters once a crash happens, regardless of where on the road it occurs.
Frequently Asked Questions
How do left-turning cars cause motorcycle collisions?
A driver turning left across traffic may not see an oncoming motorcycle or may misjudge its speed because of its narrower shape, leading to a collision in the intersection or roadway.
What can drivers do to watch for motorcycles?
Checking mirrors and blind spots twice, allowing extra following distance, and pausing an extra second before turning or changing lanes can help drivers spot a motorcycle they might otherwise miss.
What should a rider do after a motorcycle crash?
Move to a safe area if possible, call 911, avoid removing protective gear before medical staff arrive, and get checked even if injuries seem minor, since some soft-tissue injuries take hours to appear.
Are motorcycle accidents more common at intersections?
Intersections and interchange areas see a higher share of motorcycle crashes than open stretches of road because of turning movements, merging traffic, and reduced visibility.
What to Do After a Motorcycle Accident in Ontario, CA
If you're involved in or witness a motorcycle crash in Ontario, call 911 right away and stay clear of moving lanes until help arrives. Riders should accept medical evaluation even if they're able to stand or walk, since adrenaline can mask pain from fractures or internal injuries.
Document what you can if it's safe, including where vehicles came to rest and any visible road conditions, and get contact information for other drivers and witnesses. Follow up with your own doctor in the days after the crash, and keep records of any treatment in case symptoms develop later.
