US lawFederal (United States)RegulationsTitle 49 CFR — TransportationChapter XII — TRANSPORTATION SECURITY ADMINISTRATION, DEPARTMENT OF HOMELAND SECURITYPart 1584 — HIGHWAY AND MOTOR CARRIER SECURITYSubpart B — Security Programs1584.10149 C.F.R. § 1584.101Applicability.Last amended: 2020Year: 2026Length: 30 wordsOfficial source Cite as 49 C.F.R. § 1584.101 (2026)The requirements of this subpart apply to each OTRB owner/operator providing fixed-route service that originates, travels through, or ends in a geographic location identified in appendix A to this part.Next49 C.F.R. § 1584.113