[citation needed] The utility company also sponsors a 3rd-grade history curriculum that includes free rides on the line.

[17] As the heritage PCC streetcars are single-ended, the Silver Line operates one-way in a clockwise-only rotation around downtown San Diego.

[6][18] The Silver Line began service in August 2011 with one operational heritage 1946 Presidents Conference Committee (PCC) streetcar, Car #529.

In March 2014, MTS took possession of a second 1946 Presidents Conference Committee (PCC) streetcar, destined to join the Silver Line fleet as Car #530.

[1] One of the future proposals for trolley expansion is to potentially extend the Silver Line from Downtown up towards Balboa Park and the Uptown communities.

[23] The project study corridor runs between the City College Trolley Station area, and Balboa Park, in the vicinity of the San Diego Zoo.

[25][26][27] In October 2012, MTS released a study to evaluate the feasibility of reconnecting Balboa Park and downtown San Diego via an electrified streetcar corridor.

There is insufficient space between the north-south lanes of Park Boulevard to insert two tracks, and the existing structure is not strong enough to bear the weight of a full LRV were the line extended further north into the high-traffic Hillcrest area.