| Baltimore & Ohio Railroad Photo Tours: Virtual photographic mile-by-mile tour of the Baltimore and Ohio, now CSX, Railroad routes in Maryland. Historical descriptions with each photo. |
| Bi-County Transitway: A proposed "Purple Line" high-capacity transportation link between Montgomery and Prince George's Counties. Provides photographs, links to proposals and studies, and FAQ. |
| BWI Airport: The Baltimore Washington International Airport serves residents and travelers in the Baltimore/Washington Corridor. Includes flight status, directions and parking, customer service, ground transportation, and news. |
| Dillon's Bus Service: Bus charter and commuter services between Baltimore, Washington DC, Annapolis, and Bethesda. Company history, charter information, and commuter schedules. |
| Longmead United Against the ICC: A grassroots organization opposed to construction of the Intercounty Connector through the community of Longmead Crossing. |
| Maryland Aviation Project: An effort between the University of Maryland and the state’s aviation industry to create a knowledge base of supply chain management, technology, and management practices. |
| Marylanders for a Second Crossing: Citizens group seeking to promote plan for a second crossing over the Potomac to allieviate chronic traffic congestion. |
| Simmons: Provides on-demand air shuttle service primarily from BWI to Ocean City. Profile, other destinations and reservations. |
| Washington Metropolitan Area Transit Authority: Metrorail and Metrobus transit services in Washington, DC, Maryland and Virginia communities. |
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