§ 4064.
(c)
Determination of fuel economy
For purposes of this section—
(2)
Special rule for fuels other than gasoline
(3)
Time by which regulations must be issued
(Added [Pub. L. 95–618, title II, § 201(a)], Nov. 9, 1978, [92 Stat. 3180]; amended [Pub. L. 99–514, title XVIII, § 1812(e)(1)(B)(i)], (ii), Oct. 22, 1986, [100 Stat. 2836]; [Pub. L. 101–508, title XI, § 11216(a)]–(d), Nov. 5, 1990, [104 Stat. 1388–437]; [Pub. L. 103–272, § 5(g)(1)], July 5, 1994, [108 Stat. 1374]; [Pub. L. 109–59, title XI, § 11111(a)], Aug. 10, 2005, [119 Stat. 1946].)