authority: Secs. 1-4, 40 Stat. 450, as amended; sec. 1, 41 Stat. 1446, as amended; secs. 2-7, 80 Stat. 107, as amended; 100 Stat. 764; Act of Mar. 19, 1918, as amended by the Uniform Time Act of 1966 and Pub. L. 97-449,
15 U.S.C. 260-267; Pub. L. 99-359; Pub. L. 106-564,
15 U.S.C. 263,
114. 2811;
49 CFR 1.59(a), unless otherwise noted