Title 6 › CHAPTER 4 — TRANSPORTATION SECURITY › SUBCHAPTER IV — SURFACE TRANSPORTATION SECURITY › Part A — General Provisions › § 1151
Defines the key words used in this part of the law. Appropriate congressional committees names four committees in Congress (two in the Senate and two in the House). Secretary means the Secretary of Homeland Security. Department means the Department of Homeland Security. Over-the-road bus means a bus with a raised passenger area over a baggage compartment. Over-the-road bus frontline employees lists bus workers who should get security training, like drivers, security staff, dispatchers, maintenance workers, ticket agents, and other terminal or operator employees the Secretary picks. Railroad frontline employees lists railroad workers who should get training, like security staff, dispatchers, engineers, conductors, onboard staff, maintenance workers, bridge tenders, and others the Secretary picks. Railroad and railroad carrier have the meanings given in federal railroad law. State means any of the 50 States, the District of Columbia, Puerto Rico, the Northern Mariana Islands, the Virgin Islands, Guam, American Samoa, and other U.S. territories and possessions. Terrorism has the meaning given elsewhere in federal law. Transportation for an over-the-road bus means moving people or goods by such a bus between a place in one State and a place outside that State (including outside the U.S.), or moving within a State in a way that affects that interstate or international travel. United States means the 50 States, D.C., Puerto Rico, the Northern Mariana Islands, the Virgin Islands, Guam, American Samoa, and other U.S. territories and possessions. Security-sensitive material means materials (or groups of materials in certain amounts or forms) that the Secretary, with the Secretary of Transportation and after public rulemaking, finds pose a big security risk when shipped; at minimum this includes Class 7 radioactive materials, Division 1.1–1.3 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 Centers for Disease Control and Prevention under part 73 of title 42, Code of Federal Regulations. Disadvantaged business concerns means small businesses owned and controlled by socially and economically disadvantaged people as defined in federal small business rules. 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
Sep 23, 2026
Release point: 119-110