23 C.F.R. § 1300.21
(b) Definitions. As used in this section—
Child restraint means any device (including a child safety seat, booster seat used in conjunction with 3-point belts, or harness, but excluding seat belts) that is designed for use in a motor vehicle to restrain, seat, or position a child who weighs 65 pounds (30 kilograms) or less and that meets the Federal motor vehicle safety standard prescribed by NHTSA for child restraints.
High seat belt use rate State means a State that has an observed seat belt use rate of 90.0 percent or higher (not rounded) based on validated data from the State survey of seat belt use conducted during the previous calendar year, in accordance with the Uniform Criteria for State Observational Surveys of Seat Belt Use, 23 CFR part 1340 (e.g., for a grant application submitted on August 1, 2023, the “previous calendar year” would be 2022).
Lower seat belt use rate State means a State that has an observed seat belt use rate below 90.0 percent (not rounded) based on validated data from the State survey of seat belt use conducted during the previous calendar year, in accordance with the Uniform Criteria for State Observational Surveys of Seat Belt Use, 23 CFR part 1340 (e.g., for a grant application submitted on August 1, 2023, the “previous calendar year” would be 2022).
Seat belt means, with respect to open-body motor vehicles, including convertibles, an occupant restraint system consisting of a lap belt or a lap belt and a detachable shoulder belt, and with respect to other motor vehicles, an occupant restraint system consisting of integrated lap and shoulder belts.
(d) Qualification criteria for a high seat belt use rate State. To qualify for an Occupant Protection Grant in a fiscal year, a high seat belt use rate State (as determined by NHTSA) shall submit as part of its annual grant application the following documentation, in accordance with part 1 of appendix B to this part:
(1) Occupant protection plan. State occupant protection program area plan, updated annually, that identifies—
(3) Child restraint inspection stations.
(i) Projects, at the level of detail required under § 1300.12(b)(2), demonstrating an active network of child passenger safety inspection stations and/or inspection events based on the State's problem identification. The description must include estimates for the following requirements in the upcoming fiscal year:
(e) Qualification criteria for a lower seat belt use rate State. To qualify for an Occupant Protection Grant in a fiscal year, a lower seat belt use rate State (as determined by NHTSA) shall satisfy all the requirements of paragraph (d) of this section, and submit as part of its annual grant application documentation demonstrating that it meets at least three of the following additional criteria, in accordance with part 1 of appendix B to this part:
(2) Occupant protection statute. The State shall provide legal citations to the State law demonstrating that the State has enacted and is enforcing occupant protection statutes that:
(i) Require—
(ii) Notwithstanding paragraph (e)(2)(i) of this section, permit no exception from coverage except for—
(4) High risk population countermeasure programs. The State shall identify the projects, at the level of detail required under § 1300.12(b)(2), demonstrating that the State will implement data-driven programs to improve seat belt and child restraint use for at least two of the following at-risk populations:
(5) Comprehensive occupant protection program. The State shall submit the following:
(ii) Multi-year strategic plan based on input from statewide stakeholders (task force), updated on a triennial basis, under which the State developed—
(g) Use of grant funds—(1) Eligible uses. Except as provided in paragraph (g)(2) of this section, a State may use grant funds awarded under 23 U.S.C. 405(b) for the following programs or purposes only:
(v) To implement programs—
(2) Special rule. Notwithstanding paragraph (g)(1) of this section—
[88 FR 7804, Feb. 6, 2023, as amended at 90 FR 31593, July 15, 2025]