49 C.F.R. § 25.520 Job classification and structure.
Title 49 - Transportation
A recipient shall not: (a) Classify a job as being for males or for females; (b) Maintain or establish separate lines of progression, seniority lists, career ladders, or tenure systems based on sex; or (c) Maintain or establish separate lines of progression, seniority systems, career ladders, or tenure systems for similar jobs, position descriptions, or job requirements that classify persons on the basis of sex, unless sex is a bona fide occupational qualification for the positions in question as set forth in §25.550.
Title 49: Transportation
PART 25—NONDISCRIMINATION ON THE BASIS OF SEX IN EDUCATION PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE
Subpart E—Discrimination on the Basis of Sex in Employment in Education Programs or Activities Prohibited
§ 25.520 Job classification and structure.