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ÖBB class 4020 is a 3 part electric multiple unit operated by the ÖBB (Austrian Federal Railways or Österreichische Bundesbahnen), built from 1978 until 1987 as successor of the ÖBB 4030 class.
4020 of the Vienna S-Bahn
The 4020 class is used extensively on many regional rail routes, including the Vienna S-Bahn. Most trains bear the older blue ÖBB logo, meanwhile some, have received a new paint scheme with grey and red color, similar to that of the new ÖBB 4024Talent trains.[1]