A prior section 31312, Pub. L. 103–272, § 1(e), July 5, 1994, 108 Stat. 1025, related to grants for testing and ensuring the fitness of operators of commercial motor vehicles, prior to repeal by Pub. L. 105–178, title IV, § 4011(f), June 9, 1998, 112 Stat. 408.