The purpose of this subpart is to prescribe requirements and procedures relating to product and material selection and use on Federal-aid highway projects.
authority: Sections 1525 and 1303 of Pub. L. 112–141, Sec. 1503 of Pub. L. 109–59, 119 Stat. 1144;
23 U.S.C. 101 (note), 109, 112, 113, 114, 116, 119, 128, and 315;
31 U.S.C. 6505;
42 U.S.C. 3334,
4601
cite as: 23 CFR 635.401