As used in this part:

(a) Assistant Secretary means the Assistant Secretary of Labor for Occupational Safety and Health or the person or persons to whom he or she delegates authority under NTSSA or FRSA.

(b) Business days means days other than Saturdays, Sundays, and Federal holidays.

(c) Complainant means the employee who filed a NTSSA or FRSA complaint or on whose behalf a complaint was filed.

(d) Employee means an individual presently or formerly working for, an individual applying to work for, or an individual whose employment could be affected by a public transportation agency or a railroad carrier, or a contractor or subcontractor of a public transportation agency or a railroad carrier.

(e) FRSA means Section 1521 of the Implementing Recommendations of the 9/11 Commission Act of 2007, Public Law 110-053, August 3, 2007, as further amended by Public Law 110-432, October, 16, 2008, codified at 49 U.S.C. 20109.

(f) NTSSA means Section 1413 of the Implementing Recommendations of the 9/11 Commission Act of 2007, Public Law 110-053, August 3, 2007, codified at 6 U.S.C. 1142.

(g) OSHA means the Occupational Safety and Health Administration of the United States Department of Labor.

(h) Public transportation means regular, continuing shared-ride surface transportation services that are open to the general public or open to a segment of the general public defined by age, disability, or low income; and does not include: Intercity passenger rail transportation provided by the entity described in chapter 243 (or a successor to such entity); intercity bus service; charter bus service; school bus service; sightseeing service; courtesy shuttle service for patrons of one or more specific establishments; or intra-terminal or intra-facility shuttle services.

(i) Public transportation agency means a publicly owned operator of public transportation eligible to receive federal assistance under 49 U.S.C. chapter 53.

(j) Railroad means any form of nonhighway ground transportation that runs on rails or electromagnetic guideways, including commuter or other short-haul railroad passenger service in a metropolitan or suburban area and commuter railroad service that was operated by the Consolidated Rail Corporation on January 1, 1979; and high speed ground transportation systems that connect metropolitan areas, without regard to whether those systems use new technologies not associated with traditional railroads; but does not include rapid transit operations in an urban area that are not connected to the general railroad system of transportation.

(k) Railroad carrier means a person providing railroad transportation, except that, upon petition by a group of commonly controlled railroad carriers that the Secretary of Transportation determines is operating within the United States as a single, integrated rail system, the Secretary of Transportation may by order treat the group of railroad carriers as a single railroad carrier for purposes of one or more provisions of part A, subtitle V of title 49 and implementing regulations and order, subject to any appropriate conditions that the Secretary of Transportation may impose.

(l) Respondent means the person alleged to have violated NTSSA or FRSA.

(m) Secretary means the Secretary of Labor or person to whom authority under NTSSA or FRSA has been delegated.

(n) Any future statutory amendments that affect the definition of a term or terms listed in this section will apply in lieu of the definition stated herein.