49 C.F.R. § 209.103
(a) A person who knowingly violates a requirement of the Federal hazardous materials transportation laws, an order issued thereunder, 49 CFR subchapter A or C of chapter I, subtitle B, or a special permit or approval issued under subchapter A or C of chapter I, subtitle B, of this title is liable for a civil penalty of not more than $102,348 for each violation, except that—
[78 FR 9846, Feb. 12, 2013, as amended at 81 FR 43104, July 1, 2016; 82 FR 16131, Apr. 3, 2017; 83 FR 60744, Nov. 27, 2018; 84 FR 37071, July 31, 2019; 86 FR 1756, Jan. 11, 2021; 86 FR 23252, May 3, 2021; 87 FR 15866, Mar. 21, 2022; 88 FR 1125, Jan. 6, 2023; 88 FR 89561, Dec. 28, 2023; 89 FR 106294, Dec. 30, 2024]