According to figures from APTA, previous to 2014, the San Diego
Trolley achieved the highest level of
ridership in 2007, when there were 36,386,100 unlinked passenger transits
on the system over that entire year.
As of the Fourth Quarter (Q4) of 2013, the average weekday
ridership on the San Diego
Trolley system was 119,800, [3] making it the fourth busiest Light rail system in the United States.