碓氷峠
The is a Co′Co′ wheel arrangement DC electric locomotive type built between 1962 and 1969 for use hauling passenger and freight on the Shinetsu Main Line and particularly over the extreme 66.7‰, (6.67%), gradient of the Usui Pass between and . The prototype, EF62 1, was built by Kawasaki Sharyō in 1962, with the full-production locomotives built by Kawasaki, Tōshiba, and Tōyō &amp; Kisha delivered from 1963 onward.