Section 383.1 - Purpose and periodic adjustment(a)Purpose. This part adjusts the civil penalty liability amounts prescribed in 49 U.S.C. 46301(a) for inflation in accordance with the Act cited in paragraph (b) of this section.(b)Periodic adjustment. DOT will periodically adjust the maximum civil penalties set forth in 49 U.S.C. 46301 and this part as required by the Federal Civil Penalties Inflation Adjustment Act of 1990 as amended by the Federal Civil Penalties Inflation Adjustment Act Improvements Act of 2015.81 FR 52765, 8/10/2016; 83 FR 60743, 11/27/2018; 84 FR 37070, 7/31/2019