[4][5] In June 2017, Maryland governor Larry Hogan launched BaltimoreLink as part of an initiative for a better transit system in Baltimore.

A small number of routes do not have evening service, operate on weekdays or during peak hours only, or at times needed by certain employers.

[7] Until 2009, routes operated in the northwest part of the city and suburbs were known as Metro connection buses.

When Metro connection bus service began in 1984, it used designations beginning with the letter M (Mondawmin), R (Rogers Avenue) or P (Plaza), followed by a number.

After the first phase of the Greater Baltimore Bus Initiative took effect in 2005, only seven M lines remained; the number increased to eight after the M-6 route was restored several months later.

[4] Both express and commuter routes, identified with 3-digit numbers, offer service primarily during weekday rush hours between downtown areas and Park-and-Ride lots or other suburban locations in Maryland.

The commuter routes, designated with higher numbers, are operated by contractors rather than MTA employees.

[4] The newest addition to commuter bus service since 2010, known as the Intercounty Connector (ICC), operates from Gaithersburg to BWI Marshall Airport, University of Maryland College Park and Fort Meade on the new Intercounty Connector expressway in central Maryland.

These local routes operated in specific neighborhoods to transport people within the communities.

[17] Shuttle-bug service was discontinued as part of BaltimoreLink in 2017, and Route 97 was replaced by LocalLink 82.

The Eastern Bus Division will be closed in 2026 for rebuilding, with bus chargers (similar to the rebuilt Kirk Avenue Division, which reopened in June 2021) and new employee and training rooms.