Pacific Surfliner Delays, Reliability Shortfalls Prompt $1M State Study

LOS ANGELES, CA — California is investing $1 million in a study aimed at improving Pacific Surfliner reliability and coordination along the 351-mile coastal rail corridor that has been plagued by delays, landslides and erosion-related shutdowns.

The Los Angeles-San Diego-San Luis Obispo Rail Corridor Agency, which oversees the Amtrak Pacific Surfliner, announced Wednesday that it received the state funding to update a 2022 study examining train schedules, operational efficiency and long-term infrastructure needs.

The funding comes as the Pacific Surfliner continues to struggle with on-time performance even as ridership surges.

During the first three months of 2026, just 81.6% of Pacific Surfliner trains arrived at their final destinations within 15 minutes of schedule, falling short of the agency's 90% on-time performance goal.

That came even as ridership jumped 38% compared with the same period a year earlier, reaching more than 600,000 passenger trips, according to data from the railroad.

The route, which serves 29 stations across San Diego, Orange, Los Angeles, Ventura, Santa Barbara and San Luis Obispo counties, has also experienced repeated disruptions along the erosion-prone coastline near San Clemente.

In September, powerful surf and high tides damaged the coastal rail line, forcing a temporary shutdown and requiring passengers to take replacement buses between Irvine and Oceanside. Service resumed several days later.

The disruption followed a series of landslides along the same stretch of coastline. A January 2024 landslide near San Clemente's Mariposa Point suspended regular passenger service for roughly two months, while two landslides in 2023 shut down the tracks for weeks at a time.

More recently, Metrolink suspended service to Oceanside for five days in late October because of anticipated high tides. Officials said the precautionary shutdown would also reduce rail traffic and potential delays for Pacific Surfliner and freight trains sharing the tracks.

While the newly funded study will not directly address the physical threats posed by coastal erosion, it could help agencies better coordinate train schedules, respond to disruptions and identify infrastructure improvements that would make service more reliable.

"This investment is an important step toward strengthening coordination and improving the reliability of passenger rail service along the LOSSAN corridor," said Jason Jewell, managing director of the LOSSAN Rail Corridor Agency.

"By working closely with rail corridor stakeholders on this effort, we will be able to identify opportunities to optimize services, improve reliability, recognize infrastructure needs and plan for future sustainable rail transportation services."

The California State Transportation Agency announced the $1 million award Nov. 5 through its Flexible State Rail Assistance Program.

The study will examine ways to better coordinate passenger and freight train schedules, regularly update timetables based on operating conditions and identify infrastructure constraints that contribute to delays.

Officials have previously identified signal failures, speed restrictions and interference from other passenger trains among the leading causes of delays along the corridor.

Because passenger, commuter and freight trains share tracks controlled by multiple agencies and railroad companies, delays involving one train can have ripple effects across the system.

The study will also consider potential service demands associated with major events, including the 2028 Olympic and Paralympic Games in Southern California.

The updated study follows a recommendation from a state working group established under Senate Bill 1098, which examined ways to improve passenger rail coordination, performance and reliability along the corridor.

The working group recommended regularly updating the corridor optimization study to reflect changing service demands and operating conditions.

The $1 million grant will pay for planning rather than construction. Any infrastructure improvements identified through the study would require additional evaluation, approvals and funding.

LOSSAN officials said they expect to bring an item before the agency's board of directors to begin the study. Staff will work with state transportation officials and partner agencies to establish its scope, timeline and coordination process.

The agency has not announced when the study will be completed or when any resulting service improvements could be implemented.