LNER Class A4
The Class A4 is a class of streamlined 4-6-2 steam locomotive designed by Nigel Gresley for the London and North Eastern Railway in 1935. Their streamlined design gave them high-speed capability as well as making them instantly recognisable, and one of the class, 4468 "Mallard", holds the world record as the fastest steam locomotive. Thirty-five of the class were built to haul express passenger trains on the East Coast Main Line route from London Kings Cross via York to Newcastle, and later via Newcastle to Edinburgh, Scotland. They remained in service on the East Coast Main Line until the early 1960s when they were replaced by Deltic diesel locomotives. Several A4s saw out their remaining days until 1966 in Scotland, particularly on the Aberdeen - Glasgow express trains, for which they were used to improve the timing from 3.5 to 3 hours.
2-8-4
Two prototypes were built in two-cylinder and three-cylinder versions. When tested, the two-cylinder version proved to be superior to the three-cylinder Class 114 version, and eventually twelve more two-cylinder Class 214 locomotives were built. In 1936, no. 214.13 reached a speed of , the highest speed ever attained by an Austrian steam locomotive. The regular speed limit was .
From 1938, the Deutsche Reichsbahn (DRB) designated the locomotives class 12.0. In the summer of 1939, they hauled 600 tons express trains out of Vienna over Wienerwald at a speed of , reaching over level stretches.