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COLTON, San Bernardino County, Calif., Sept. 18, 2026 — Three vehicles collided Thursday afternoon, September 17, on southbound Interstate 215 near La Cadena Drive in Colton, according to authorities. At least one injury was reported at the scene.
State troopers responded shortly after 1:27 p.m. to a report of a crash involving a gray Hyundai and a black Mercedes on the right shoulder. The black Mercedes had reportedly been driving recklessly shortly before the collision, though this has not been independently confirmed.
The crash blocked multiple lanes of southbound I-215, including the high-occupancy vehicle lane, for more than an hour while crews worked the scene. A minor injury was recorded at the scene, and tow crews were called to remove the vehicles. Freeway Service Patrol units assisted with traffic control and closed out their response by mid-afternoon, with lanes reported clear and traffic moving again by about 2:06 p.m.
Investigators continue reviewing the crash. We wish those injured a full recovery.
Where Multi-Vehicle Crashes on Freeways Tend to Cluster
Multi-vehicle crashes on interstates often build up near merge points, narrow shoulders, and stretches where lanes shift or split, like the area around an off-ramp or a divided carpool lane. Drivers slow suddenly, following distances shrink, and one hard brake can pull two or three more cars into the same lane space within seconds.
Shoulders and center dividers add another layer of risk. When a first crash blocks a lane, vehicles behind it often swerve into a narrow shoulder or median area to avoid a collision, which can put them into the path of oncoming traffic in that same stretch. Emergency crews then have to manage a live lane closure while more cars approach at freeway speed.
According to the National Highway Traffic Safety Administration, 365 large-truck occupants were killed in multi-vehicle crashes involving large trucks in 2023. Even crashes without a large truck involved often follow the same pattern: a first collision creates a hazard, and the vehicles arriving next have little room to react.
Frequently Asked Questions
What makes multi-vehicle crashes hard to investigate?
Because several vehicles and drivers are often involved, authorities have to piece together the sequence of impacts, who braked or swerved first, and whether any driver behavior before the crash played a role. That can take longer than a single-vehicle collision.
What typically causes chain-reaction crashes on freeways?
They often start with one vehicle slowing or stopping suddenly, followed by following vehicles that can't react in time. Narrow lanes, blocked shoulders, or a dispute between drivers can also contribute to a first collision that then draws in other vehicles.
How can drivers avoid getting pulled into a pile-up?
Leaving extra space behind the vehicle ahead and watching brake lights several cars up, instead of just the car directly in front, gives drivers more time to slow safely if traffic bunches up unexpectedly.
What to Do After a Multi-Vehicle Crash in Colton, CA
If you're involved in a multi-vehicle crash, move to a safe area away from traffic if the vehicle is drivable and it's safe to do so, and call 911 to report injuries and get help routed to the scene. Turn on hazard lights and, if you have them, set out flares or triangles to warn approaching traffic.
Even if injuries seem minor at first, it's worth getting checked by a medical provider, since some injuries from a crash don't show symptoms right away. Take photos of the scene and vehicle positions if you can do so safely, and get a copy of the official report once it's available for your records.
