DALY CITY, San Mateo County, Calif., Oct. 16, 2026 — A three-vehicle crash with minor injuries blocked the connector from northbound I-280 to southbound State Route 1 in Daly City on Wednesday evening, October 14, according to the California Highway Patrol.
The collision was reported around 5:27 p.m. and involved a Toyota Prius, a Honda Pilot and a Toyota RAV4. The agency's traffic log listed the crash as a minor-injury collision on the ramp connecting the two highways.
The Prius was reported stopped in the roadway as a traffic hazard after the crash. The extent of any injuries has not been released, and it is not known how many people were taken for medical evaluation.
The cause of the crash has not been determined. The CHP has not said which vehicle struck which, or whether speed, following distance, or another factor contributed. The incident remains under review.
We wish those injured a full recovery.
What Actually Cuts Down Multi-Vehicle Pileups on Freeway Connectors
Ramp crashes like this one usually start small, a tap of the brakes, a merge misjudged, and grow into something bigger because of the speed differential between through traffic and vehicles slowing for a curve or a ramp. On a connector where cars are shifting from one freeway's speed to another's, a few seconds of inattention can turn a minor bump into a chain-reaction collision involving several vehicles.
Engineers have found that certain physical changes to interchanges make a real difference. Wider sightlines on curved connectors, better-timed warning signage, rumble strips ahead of sharp ramp curves, and reflective striping all give drivers more time to react before they're on top of slowing traffic. Some agencies have also added dynamic speed-advisory signs that adjust in real time when congestion builds, which cuts down on the sudden braking that triggers rear-end chains.
Driver behavior still matters alongside the engineering. According to the National Highway Traffic Safety Administration, 28,595 large-truck occupants were injured in multi-vehicle crashes involving large trucks in 2023, a reminder that when several vehicles converge at speed, the number of people exposed to injury multiplies quickly. Keeping a consistent following gap and slowing early for ramp curves remain the simplest ways drivers reduce how hard that chain reaction hits.
Frequently Asked Questions
What should I do if I'm stopped near a crash on the highway?
Turn on hazard lights, stay buckled if it's safe to remain in the vehicle, and move onto the shoulder or a traffic-free area if you can do so safely. Avoid standing between vehicles or in a live lane.
How does fog or low visibility contribute to pileups?
Reduced visibility shortens the distance drivers have to see and react to slowing traffic ahead, which is why multi-vehicle crashes become more likely when fog, rain, or glare limit sightlines on a connector or curve.
Why does following distance matter so much on freeways?
A longer gap gives a driver more time to brake smoothly instead of swerving or slamming on the brakes, which is usually what turns a single slowdown into a multi-car chain reaction.
Are secondary crashes common after an initial wreck?
Yes. Vehicles slowing or stopping near an earlier collision create a new hazard for traffic approaching from behind, especially on ramps and connectors where sightlines are limited.
What to Do After a Multi-Vehicle Crash in Daly City, CA
If you're involved in or witness a multi-vehicle crash on a freeway connector, move to a safe spot away from traffic as soon as possible and call 911 if anyone needs medical attention. Even if injuries seem minor at the scene, it's worth getting checked by a medical provider afterward, since some injuries from sudden braking or impact don't show symptoms right away.
Exchange information with other drivers involved and note the location, time, and any details you remember while they're fresh. Requesting a copy of the official CHP report in the days after the crash can help with insurance claims and give a clearer record of what happened.
