Title 6 › Chapter CHAPTER 4— - TRANSPORTATION SECURITY › Subchapter SUBCHAPTER IV— - SURFACE TRANSPORTATION SECURITY › Part Part A— - General Provisions › § 1151
Defines the key words used in this part. "Appropriate congressional committees" means four named committees: Senate Commerce, Science, and Transportation; Senate Homeland Security and Governmental Affairs; House Homeland Security; and House Transportation and Infrastructure. "Secretary" means the Secretary of Homeland Security. "Department" means the Department of Homeland Security. An "over‑the‑road bus" is a bus with a raised passenger area above a baggage compartment. "Over‑the‑road bus frontline employees" means drivers, security staff, dispatchers, maintenance and support workers, ticket agents, terminal workers, and any others the Secretary says need security training. "Railroad frontline employees" means security staff, dispatchers, locomotive engineers, conductors, train crew and other onboard workers, maintenance and support workers, bridge tenders, and others the Secretary says need security training. "Railroad" and "railroad carrier" have the meanings in section 20102 of title 49. "State" and "United States" each include the 50 States, the District of Columbia, Puerto Rico, the Northern Mariana Islands, the Virgin Islands, Guam, American Samoa, and any other U.S. territory or possession. "Terrorism" has the meaning in section 101 of this title. "Security‑sensitive material" is any material or class of materials that the Secretary, with the Secretary of Transportation and after public rulemaking, decides poses a serious national security risk in transport; at minimum this covers Class 7 radioactive materials; Division 1.1, 1.2, or 1.3 explosives; materials poisonous or toxic by inhalation (including Division 2.3 gases and Division 6.1 materials); and select agents or toxins regulated by the CDC under part 73 of title 42, Code of Federal Regulations. "Disadvantaged business concerns" means small businesses owned and controlled by socially and economically disadvantaged individuals as defined in section 124 of title 13, Code of Federal Regulations. "Amtrak" means the National Railroad Passenger Corporation.
Full Legal Text
Domestic Security — Source: USLM XML via OLRC
Legislative History
Reference
Citation
6 U.S.C. § 1151
Title 6 — Domestic Security
Last Updated
Apr 6, 2026
Release point: 119-73