| 1. 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. |
| http://www.trainweb.org/oldmainline |
| 2. 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. |
| http://www.bi-countytransitway.com |
| 3. 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. |
| http://www.bwiairport.com |
| 4. Dillon's Bus Service
|
| Bus charter and commuter services between Baltimore, Washington DC, Annapolis, and Bethesda. Company history, charter information, and commuter schedules. |
| http://www.dillonbus.com |
|
Australia