LEGO Trains is one of the longer running themes that dates back from 1966 and ran up until 2006. During its run there were multiple sets released running on various power platforms from 4.5volt, to 9 and 12 volt sets. Later in 2011 LEGO released additional train sets using RC and Power Functions controllers under different themes like City.
1972 LEGO Sets
1972 was a pivotal year in LEGO’s U.S. expansion. Following the end of its Samsonite license, LEGO founded LEGO USA in Brookfield, Connecticut, while Samsonite continued production in Canada. The year also brought key new parts—including the first boat hulls, wings, propellers, and helicopter rotors—broadening creative possibilities. Trains remained a major focus with sets such as 181 Train Set with Motor, 180 4.5V Train with 5 Wagons, and 724 12V Diesel Locomotive, continuing to enhance LEGO’s realism and play depth.