The world’s fastest steam locomotive is built.
The Mallard could reach a speed of over 100 miles per hour (160 km/h).
Source
The first Orient Express leaves Paris.
William B. Purvis patented the electric switch on railways that would shut off the electric supply after carriages pass the contact device.
Paris Metro opens.
Werner von Siemens presents the world's first electric locomotive.
London launched its first tram, built by George Francis Train from NYC.