Regulations last checked for updates: Feb 13, 2026

Title 48 - Federal Acquisition Regulations System last revised: Jan 28, 2026
1215.603 - 1215.603 General.

DOT will not pay any costs associated with the preparation of unsolicited proposals. Proposals that do not meet the definition and applicable content and marking requirements of FAR subpart 15.6 will not be considered under any circumstances and will be returned to the submitter.

authority: 5 U.S.C. 301; 41 U.S.C. 1121(c)(3); 41 U.S.C. 1702; and 48 CFR 1.301 through 1.304
source: 87 FR 61159, Oct. 7, 2022, unless otherwise noted.
cite as: 48 CFR 1215.603