[1] The 6000 series was scheduled for its final commercial operation on 13 October 2018.

[3] The TRTA 6000 series won the 1972 Laurel Prize from the Japan Railfan Club.

[4] The 6000 series trains have been in service since 1971, and have begun to show their age.

[5] The earlier chopper-controlled sets run as eight-car formations, while the refurbished VVVF-controlled sets operate as ten-car formations.

[6] The three-car prototype set 6000, used on the Kita-Ayase branch line until 2014, is used as a staff training unit at Shin-Kiba Depot in Koto, Tokyo.

The cab car was inspired by Bay Area Rapid Transit (BART) in the San Francisco Bay Area, thus created the A-cars as the end cars only.