Locomotion No. 1 became the first passenger-carrying steam-powered locomotive and was driven by George and Stephenson.
Source
The first train passenger service began.
The Transcontinental Railroad linking up the East and West halves of the US was completed in Colorado.
The Eden train wreck happened when a trail derailed from Denver, Colorado, to St Louis, Missouri.
The first Orient Express leaves Paris.
The Moscow Metro was opened to the public.