A prior section 10703, Pub. L. 95–473, Oct. 17, 1978, 92 Stat. 1372; Pub. L. 96–296, § 22(a), (h), July 1, 1980, 94 Stat. 812, 814; Pub. L. 97–449, § 5(g)(5), Jan. 12, 1983, 96 Stat. 2443; Pub. L. 98–216, § 2(11), Feb. 14, 1984, 98 Stat. 5; Pub. L. 99–521, § 7(a), Oct. 22, 1986, 100 Stat. 2994; Pub. L. 103–272, § 5(m)(21), July 5, 1994, 108 Stat. 1377, related to authority for carriers to establish through routes, prior to the general amendment of this subtitle by Pub. L. 104–88, § 102(a). See sections 10703 and 13705 of this title.