Available 
Available 
SAN DIEGO, San Diego County, Calif., Sept. 17, 2026 — Two people were hurt Thursday morning, September 17, in a rear-end crash that shut down all southbound lanes of Interstate 805 near El Cajon Boulevard, according to authorities.
The California Highway Patrol reported that a sedan was struck from behind near the right lane of southbound I-805 just north of El Cajon Boulevard early Thursday. One vehicle reportedly sustained major front-end damage and came to rest facing the wrong way against the center divider, while the vehicle it struck showed major damage to its rear end and stopped on the right shoulder, also facing the wrong direction.
Investigators said all southbound lanes were blocked while crews worked the scene. A tow truck was requested to clear the vehicles, and a Freeway Service Patrol unit that had responded to the area closed out its assignment once the scene was addressed.
The California Highway Patrol classified the crash as a minor-injury collision.
The incident remains under investigation. Our thoughts are with those who were injured, and we wish them a full recovery.
How Investigators Piece Together a Rear-End Crash
Officers who respond to a rear-end collision start by securing the scene and getting people off the freeway or shoulder safely before anything else. That often means shutting down lanes, as happened on I-805, so crews can measure skid marks, photograph vehicle positions, and document damage before tow trucks move anything.
Determining exactly how a rear-end crash happened, following distance, speed, road surface, driver reaction, can take longer than people expect. Investigators may pull data recorders from the vehicles, review traffic camera footage if it exists, and interview witnesses whose accounts sometimes conflict. A final report reconciling all of that isn't rushed, because errors made early are hard to correct later.
According to the National Highway Traffic Safety Administration, 595,000 injury rear-end crashes were estimated in 2019. That volume is part of why agencies like the CHP process these reports on a rolling basis instead of releasing conclusions right away. When a crash involves a fatality, agencies also typically hold names until next of kin have been notified, which can add days to any public release of details.
Frequently Asked Questions
What should I do if I'm rear-ended?
Move to a safe location if possible, call 911, and exchange information with the other driver. Even if you feel fine, get checked by a medical provider, since injuries like whiplash can take hours or days to show symptoms.
How do road conditions affect stopping distance?
Wet pavement, debris, or poor visibility all increase the distance a vehicle needs to stop safely. Drivers following too closely for conditions have less time to react if traffic ahead slows suddenly.
Are rear-end crashes more common in heavy traffic?
Stop-and-go congestion is a frequent setting for rear-end collisions, since sudden braking gives following drivers less warning. Distraction and following too closely are common contributing factors regardless of traffic volume.
What to Do After a Rear-End Crash in San Diego, CA
If you're involved in a rear-end crash in San Diego, prioritize safety first: turn on hazard lights, check on everyone involved, and call for medical help if there's any doubt about injuries. Even minor-seeming impacts can cause neck or back injuries that aren't obvious right away, so a medical evaluation soon after the crash is worth doing even if you feel okay.
Once everyone is safe, document the scene with photos if you're able, get contact and insurance information from other drivers, and file a report with local authorities. Keep any paperwork from medical visits or vehicle repairs, since those records can matter later on.
