Large crowds of Caltrain riders packed San Francisco's 4th and King Station Wednesday evening after a northbound Caltrain train struck a vehicle near Burlingame, California, on Wednesday evening, September 2, 2026, causing delays of more than an hour along the Peninsula line. Caltrain had not initially released details about the collision. Videos captured massive crowds waiting to board trains as delays spread along the Peninsula.
According to the San Francisco Chronicle, Caltrain told riders to expect delays of more than an hour for all trains near Burlingame. The Chronicle reported crowds of commuters at 4th and King. Caltrain had not initially provided further details about the collision.
The location of Wednesday's holdup is significant to anyone who follows Peninsula rail safety. The Broadway crossing in Burlingame is identified under a CPUC safety-prioritization methodology as a top statewide priority for grade separation or elimination (see Caltrain). The designation identifies the crossing as a priority for grade separation.
A Crossing With a Deadly History
Broadway has been discussed in connection with vehicle strikes and pedestrian risk.
The timing of Wednesday's disruption also landed on a notable date for transit safety advocates. That same day, Caltrain and regional partners kicked off the 17th Annual California Rail Safety Month with an official event and press ride-along at San Jose's Diridon Station, according to Streetsblog SF. The campaign and the disruption occurred on the same day.
A System Built for Speed, Vulnerable to a Single Stall
The Broadway crossing is at street level. Caltrain has pursued projects to address it, including the Broadway grade separation project.
The Wednesday collision caused delays along the Peninsula.
Long-Term Fix Carries a $615 Million Price Tag
A full-build estimate for the Broadway Grade Separation Project is about $615 million, based on the City of Burlingame project study report, according to Hoodline. The redesigned project narrows the rail structure and removes the Broadway station from its scope in an effort to control costs, according to Caltrain.
Locally, funding has been moving forward in pieces. In June, the San Mateo County Transportation Authority allocated $21.6 million in Measure A funds to bring the Burlingame Broadway grade separation project to 100% final design, as Hoodline reported. The authority also programmed up to $321.6 million for construction, contingent on a pending $90.5 million federal grant.
Cameras and Sensors Aim to Curb Driver Behavior
Short of a full rebuild, attention has remained focused on safety at the Broadway crossing.
Those concerns reflect broader safety challenges on the Peninsula rail system. Vehicle incursions and trespasser collisions are among the safety issues facing the line.
Separately, bicycle thefts aboard Caltrain trains have been reported as another unrelated security concern.
