(a) Unsolicited proposals should be submitted to the responsible OA contracting office for appropriate handling. Specific information concerning the mission of each DOT OA is available online at https://www.transportation.gov/. Offerors are urged to contact these contracting/procurement offices prior to submitting a proposal to ensure that the unsolicited proposal reaches the correct contracting office for action. This action will reduce unnecessary paperwork and wasted time for both the Government and offerors.