What is Railway Labor Act?

Legal Definition
The Railway Labor Act is a United States federal law on US labor law that governs labor relations in the railroad and airline industries. The Act, passed in 1926 and amended in 1934 and 1936, seeks to substitute bargaining, arbitration and mediation for strikes as a means of resolving labor disputes. Its provisions were originally enforced under the Board of Mediation, but were later enforced under a National Mediation Board.
-- Wikipedia