2. Electronic logging devices (a) In general— Section 31137(b)(1)(C) of title 49, United States Code, is amended by striking “2 years” and inserting “4 years”. ⋯ (b) Revision of regulations— The Secretary of Transportation shall modify regulations issued under section 31137 of title 49, United States Code, as necessary to carry out the amendment made by this section. ⋯