Section 642, Pub. L. 91–518, title VIII, § 802, Oct. 30, 1970, 84 Stat. 1340, prohibited discontinuance of intercity rail passenger service other than in accordance with provisions of this chapter. See section 24705 of Title 49, Transportation.

Section 643, Pub. L. 91–518, title VIII, § 803, Oct. 30, 1970, 84 Stat. 1340, related to separability of provisions of this chapter.

Section 644, Pub. L. 91–518, title VIII, § 805, Oct. 30, 1970, 84 Stat. 1340; Pub. L. 92–316, § 11, June 22, 1972, 86 Stat. 233; Pub. L. 93–496, § 11, Oct. 28, 1974, 88 Stat. 1531; Pub. L. 99–272, title IV, § 4007(a), Apr. 7, 1986, 100 Stat. 108, related to records and audit of National Railroad Passenger Corporation and certain railroads. See section 24315 of Title 49, Transportation.