SAN BRUNO, San Mateo County, Calif., Oct. 31, 2026 — A motorcyclist was injured on Wednesday evening, October 28, in a crash involving several vehicles on the connector from northbound US-101 to eastbound I-380 in San Bruno, according to the California Highway Patrol.
The crash was reported shortly after 6:19 p.m. on the ramp connecting NB 101 to I-380, according to the CHP traffic log. Initial reports described a motorcycle down in the number one lane with as many as five other vehicles stopped nearby, though it was not immediately clear how many had been directly involved. The log identifies the vehicles involved as a white Honda, a motorcycle and a blue Tesla Model Y.
An ambulance was requested for an injury, and the CHP log later noted the motorcyclist was down on the roadway. A fire unit also responded, and the San Mateo County Sheriff's Office was notified of the injury, per the log. The extent of the motorcyclist's injuries was not released.
The roadway was blocked for a period while crews worked the scene, with lanes reported clear within about two and a half hours of the initial call. The California Highway Patrol's Freeway Service Patrol also assisted and later closed out its response. No cause has been released, and the crash remains under investigation.
We hope everyone involved comes through this safely.
More on Crashes in San Bruno, CA
This multi-vehicle crash happened on US-101 in San Bruno, CA. We cover crashes across San Mateo County as they're reported, and you can browse the latest in our San Mateo County accident reports.
Frequently Asked Questions
Does the condition of the road surface matter for motorcycle safety?
Yes. Loose gravel, oil slicks, uneven pavement or wet surfaces can cause a motorcycle to lose traction much faster than a car, since a bike balances on two narrow contact points with the road.
What gear helps reduce injuries for riders?
A DOT-approved helmet, abrasion-resistant jacket and pants, gloves and over-the-ankle boots are commonly cited as reducing the severity of injuries in a crash, though they cannot prevent a collision from happening.
What usually causes multi-vehicle motorcycle crashes like this one?
Common factors include a vehicle merging or changing lanes without seeing the rider, sudden braking in heavy traffic, and reduced visibility, though the cause of any specific crash is determined by investigators, not assumed beforehand.
Why do motorcyclists tend to get hurt worse than other drivers in the same crash?
Riders lack the frame, airbags and seatbelts that enclose occupants in a car, so a collision or fall can throw them directly onto the pavement or into another vehicle.
