Transportation by rail, bus, and train has traditionally been a stronghold of organized labor in the United States. The credible threat posed by the railroad strike wave of 1944-45 resulted in the Taft-Hartley Act, which dramatically curtailed the legal rights of railroad workers to strike. These workplaces are centralized into depots, garages, and yards where vehicles are mustered, cleaned, repaired, and dispatched. Quashing organizing in these workplaces is thereby more difficult than in more decentralized workplaces (except where enabled by anti-union laws and chummy union bureaucrats). Furthermore, there is no gig economy model for mass transit: it’s practically impossible.