- May 15
- 1869 – The first trains operate the entire length of the First Transcontinental Railroad in North America traveling between Omaha, Nebraska, and Sacramento, California.
- 1882 – Lehrter Stadtbahnhof (pictured), the precursor to the current Berlin Hauptbahnhof, opens in Germany.
- 1936 – The first City of Los Angeles passenger train makes its debut, using the streamliner trainset M-10002, running from Chicago, Illinois, to Los Angeles, California, on the Chicago and North Western Railway and the Union Pacific Railroad.
- 2004 – With repairs to tunnels 8 and 16 complete and destroyed bridges rebuilt, including the Goat Canyon Trestle, the Carrizo Gorge Railway officially reopens freight service to Plaster City and the Union Pacific Railroad interchange.
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