

| 2006 | SHA focuses efforts on two Joint Mobility studies with Virginia DOT |
| 2005 | SHA presented Express Toll Lane alternatives to the public in a series of community meetings |
| 2003 | SHA began developing more cost-effective alternates, called Express Toll Lanes. |
| Public workshops held to reinitiate public involvement activities, update public on status of study, request input on alternates under consideration and to discuss Express Toll Lanes and their application on the Beltway. | |
| 2001 | SHA and Maryland Transit Administration (MTA) conducted more detailed evaluations which resulted in recommendations that the HOV and rail transit studies be divided into two separate studies: the Capital Beltway Study and the Purple Line Study (now called Bi-County Transitway). |
| 2000 | An Alternates Public Workshop was held. |
| 1996,1998, 2000 | Public workshops held to update the public on the continued development of the alternates. |
| 1995 | Introductory public workshop was held to discuss the "Purpose and Need" for the project and to present the proposed alternate strategies. Public/agency involvement and input following that workshop resulted in the refinement of the initial strategies into four distinct alternate packages: No-Build, Transportation System Management/Transportation Demand Management (TSM/TDM), High Occupancy Vehicle Lanes (HOV), and Transit including options for heavy rail, light rail, and express bus. |
| 1994 | The study was reinitiated with a new focus on multimodal transportation improvements. |
1990 |
Maryland Department of Transportation initiated the Capital Beltway High Occupancy Vehicle (HOV) Lane Study to investigate the feasibility of introducing HOV lanes on Maryland's section of the Capital Beltway from the American Legion Bridge to the Woodrow Wilson Bridge. |