; and (B) more than 15 MGT annually, at least 4 times per calendar year with not less than 43 days between TGMS inspections. (6) For track Class 5, at least 4 times per calendar year with not less than 43 days between TGMS inspections. (7) For track Classes 6 and 7, at least twice within any 120-day period with not less than 25 days between TGMS inspections. (8) For track Class 8, at least twice within any 60-day period with not less than 12 days between TGMS inspections. (9) For track Class 9, at least twice within any 30-day period with not less than 6 days between TGMS inspections. (10) For crossovers where the track speed is more than 30 miles per hour, at least twice per calendar year with not less than 120 days between TGMS inspections. (b) Applicable requirements The Secretary shall ensure that any requirements under subpart F and subpart G, part 213 of title 49, Code of Federal Regulation, including part 213.333, that are triggered by the amendments made in subsection (a) are applied to the applicable track Class. (c) Modifying regulations The Secretary is authorized to modify or issue such regulations as necessary to carry out this section. 9. Train approach warning Not later than 1 year after the date of enactment of this Act, the Secretary of Transportation shall promulgate or update such regulations as are necessary to require that all railroads provide warning equipment to railroad watchmen and lookouts for roadway workers that— (1) include whistles, air horns, white disks or red flags, or lanterns