Public transit in San Diego
San Diego runs on the Trolley + Bus. Here's everything you need to know before you arrive.
At a glance
System name
Trolley + Bus
Lines / network size
4 metro lines
Single fare
$2.50
Day pass
$6 (≈ US$6.00)
How you pay
PRONTO card (tap), exact-cash on buses
Top tip
The trolley reaches the border at San Ysidro and across the bay to Coronado. Cheap, scenic, and reliable.