The 1000 series was the world's first train type to use fuzzy logic to control its speed, and this system developed by Hitachi[1] accounts for the relative smoothness of the starts and stops when compared to other trains, and is 10% more energy efficient than human-controlled acceleration.

[2] It was the recipient of the 28th Laurel Prize award presented by the Japan Railfan Club.

Sets are formed as follows, with car 1 at the Tomizawa end.

[3] First entering service in 1987,[4] the fleet of 21 sets was constructed between 1985 and 1996.

[5] From 2003 until 2013, the 1000 series trains underwent mid-life refurbishment to extend their lifespan.