How does public transport work?
In Baltimore, there are four major options: bus, MARC train, Light Rail, and the Metro subway. A one-way bus or subway fare is $ 1.60, a day pass offering unlimited daily use of the bus and the subway is $ 3.50, a weekly pass is $ 16.50 and a monthly pass is $ 64. The buses run throughout the city and into Baltimore County.
A route planner for Baltimore public transport services can be found here.