Pennsylvania Avenue lighthearted celebrations, including a series of day- and nighttime Shriner's parades in the 1920s and 1930s. Thomas and Concepcion Picciotto are the founders of the White House Peace Vigil, the longest running anti-nuclear peace vigil in the US, at Lafayette Square on the 1600 block of Pennsylvania Avenue. After the Oklahoma City bombing in 1995, the Secret Service closed the portion of Pennsylvania Avenue in front of the White House to all vehicular traffic. Pedestrian and bicycle traffic, however, was still permitted on the sidewalk. After 9/11 this policy was made permanent. Near the White House traffic is redirected to
West Executive Avenue West Executive Avenue West Executive Avenue Northwest (commonly known as "West Executive Avenue" or "West Exec") is a closed street in Washington, D.C., that, as of 2017, functions as a parking lot for persons employed by the Executive Office of the President. It runs adjacent to the White House. West Executive Avenue is a short street that runs along a north-south axis adjacent to the White House. It sits between the White House and the Eisenhower Executive Office Building and runs parallel to East Executive Avenue, which, in 1986, was also permanently closed to public traffic. On its northern end