April 20 â Electrification of the South Side Elevated Railway in Chicago is completed ending all steam locomotive operations on the route. Multiple-unit (M.U.) train control is also introduced by railroad engineer Frank J. Sprague.
July 3 â Rail transport in Sudan: Desert railway from Wadi Halfa completed to Atbara by British military engineers on 1,067 mm (3 ft 6 in) gauge.