• § 231. Definitions

• § 231a. Annuity eligibility requirements

• § 231b. Computation of annuities

• § 231c. Computation of spouse and survivor annuities

• § 231d. Annuity beginning and ending dates

• § 231e. Lump sum payments

• § 231f. Railroad Retirement Board

• § 231f-1. Annual actuarial report

• § 231g. Court jurisdiction

• § 231h. Returns of compensation; conclusiveness

• § 231i. Erroneous payments

• § 231j. Waiver of annuities

• § 231k. Incompetence

• § 231l. Penalties

• § 231m. Assignability; exemption from levy

• § 231n. Railroad Retirement Account

• § 231n-1. Social Security Equivalent Benefit Account

• § 231o. Private pensions

• § 231p. Free transportation

• § 231q. Crediting service under Social Security Act

• § 231r. Automatic benefit eligibility requirement adjustments

• § 231s. Separability

• § 231t. Short title

• § 231u. Benefit preservation

• § 231v. Computation and certification of account benefit ratios