This project will widen the corridor to accommodate new general purpose lanes.  It may also include the addition of High-Occupancy Toll (HOT) lanes, High-Occupancy Vehicle (HOV) lanes, and/or Express Toll Lanes (ETL).  The project, currently in a planning phase, is a joint effort between the Maryland State Highway Administration and the Maryland Transit Administration.  This study also incorporates work done for the Corridor Cities Transitway.