Available 
SUN VALLEY, Los Angeles County, Calif., Oct. 21, 2026 — A semi-truck and a Nissan Sentra collided on Tuesday morning, October 20, on southbound Interstate 5 near Laurel Canyon Boulevard in Sun Valley, according to the California Highway Patrol.
The collision was reported shortly before 11:25 a.m. on the southbound side of I-5 at Laurel Canyon Boulevard. Dispatch logs described a black Nissan Sentra and a semi-truck involved in the crash, with vehicles left along the right shoulder.
Fire crews from the Los Angeles Fire Department responded to the scene. The extent of any injuries has not been released, though the incident was initially classified as a crash with unknown injuries before being updated to confirm injuries requiring medical response.
It is not yet clear how many people were in each vehicle or what led up to the crash. The California Highway Patrol has not released a cause, and the collision remains under investigation.
We hope those who were hurt recover fully and quickly.
More on Crashes in Sun Valley, CA
This truck crash occurred at the intersection of Interstate 5 and Laurel Canyon Boulevard in Sun Valley, CA. We cover crashes across Los Angeles County as they're reported, and you can browse the latest in our Los Angeles County accident reports.
Frequently Asked Questions
What are a truck's blind spots and why do they matter?
Large trucks have wide blind spots along both sides, directly behind the trailer, and close in front of the cab. A car that lingers in one of these zones may be invisible to the driver, raising the risk of a merge or lane-change crash.
What is an underride crash?
An underride crash occurs when a smaller vehicle slides partially or fully beneath a truck's trailer, usually during a rear-end or side-impact collision. These crashes can cause severe damage because the car's safety structure is not built to absorb impact at trailer height.
What are common causes of large-truck accidents?
Driver fatigue, distraction, following too closely, and difficulty seeing smaller vehicles in blind spots are frequent factors. Road conditions and mechanical issues can also play a role.
How can drivers share the road with trucks safely?
Stay out of a truck's blind spots, keep a safe following distance, and pass on the left with plenty of room before returning to the lane. Give trucks extra space and time, as they need more distance to stop or react.
What to Do After a Truck Accident in Sun Valley, CA
If you're involved in a crash with a semi-truck, move to a safe spot if possible and call 911 right away. Even if you feel fine, get checked by a medical provider, since injuries from a truck collision can take hours or days to show symptoms. Exchange information with the other driver, take photos of the vehicles and surroundings if it's safe to do so, and ask for a copy of the CHP report once it's filed. Keep track of any subsequent medical visits or vehicle repairs, as these records may matter later.
