The National Capital Planning Comm. (NCPC) adopted a report of the Interagency Security Task Force which recommended specific urban design strategies to improve mobility & aesthetic conditions resulting from the installation of makeshift security measures throughout the Capital. With the assistance of nationally recognized urban designers, landscape architects, & security experts, the NCPC has prepared this design framework & implementation strategy for Washington's Monumental Core & the Downtown. Focuses on perimeter building security designed to protect employees, visitors, & federal functions & property from threats generated by unauthorized vehicles approaching or entering sensitive buildings. Color photos & drawings.