Security services are provided by the Yale Campus Police and members of the University Security Programs Department. The Yale Campus Police are state-certified officers. Security officers assigned to the Security Programs Department are not police officers. They provide services such as building patrol, access control, escort services, and parking lot security. Individuals are urged to walk in groups or request an escort (432-WALK (9255). Between the hours of 6:00 p.m. and 6:00 a.m., seven days a week, Yale students, faculty and staff can call 432-6330 or 432-WALK to request a University Security safe ride within campus boundaries. Visit the Department of Security on the web. Night-time transportation is available via the Nighttime Shuttle, free of charge with a valid ID, for students working late in the evenings. The Nighttime Shuttle also runs between 6:00 p.m. to 1:00 a.m. Monday – Sunday (seven days a week). This services runs on a scheduled route around the campus and does off-route drop offs. Call 432-6330 or visit them on their website http://to.yale.edu/nighttime-routes.