§ 30124.
A motor vehicle safety standard prescribed under this chapter may not require a manufacturer to comply with the standard by using a safety belt interlock designed to prevent starting or operating a motor vehicle if an occupant is not using a safety belt.
([Pub. L. 103–272, § 1(e)], July 5, 1994, [108 Stat. 957]; [Pub. L. 112–141, div. C, title I, § 31202(a)(2)], July 6, 2012, [126 Stat. 757].)