and which the Secretary believes should be included. (b) Publication of notice Upon completion of the revision required under subsection (a), the Secretary shall publish a final notice in the Federal Register of such revision. 5. Inclusion of newly established drugs in department of transportation drug tests Not later than 60 days after the final notice required under section 4(b) is published, the Secretary of Transportation shall issue such regulations as are necessary to update any regulations containing procedures for transportation employee workplace drug and alcohol testing programs to include testing for newly identified substances in drug-testing panels, consistent with the Mandatory Guidelines for Federal Workplace Drug Testing Programs as revised by the Secretary of Health and Human Services under section 4.