  the pacific surfliner is a  higher-speed passenger train operated by amtrak, with funding from the california department of transportation as part of the amtrak california network. the pacific surfliner serves the communities on the coast of southern california between san diego and san luis obispo. the service carried over 2.7 million passengers during fiscal year 2013, a 2.5% increase from fy2012. total revenue during fy2013 was $62,576,548, an increase of 6.8% over fy2012. the pacific surfliner was amtrak's third-busiest service, and the busiest outside the northeast corridor. the los angeles-san diego portion of the pacific surfliner route was once served by the santa fe railway's san diegan passenger trains until amtrak took over operations. initially there were three daily trips, but in 1976 the schedule was expanded. in 1988 the service was extended to santa barbara, followed in 1995 with 
Airport_rail_links_in_the_United_States Amtrak_routes Higher-speed_rail Passenger_rail_transportation_in_California Public_transportation_in_Los_Angeles_County,_California Public_transportation_in_Orange_County,_California Public_transportation_in_San_Diego_County,_California Public_transportation_in_Santa_Barbara_County,_California Public_transportation_in_Ventura_County,_California Transportation_in_Southern_California