The 12.7-kilometre (7.9 mi) Ina Line (伊奈線, Ina-sen) that runs north from Ōmiya Station in Saitama, Saitama, alongside the Tohoku Shinkansen and Joetsu Shinkansen elevated high-speed lines through Ageo to Uchijuku Station in Ina in Saitama Prefecture in the Greater Tokyo Area is the only route that is run on the system.

Saitama New Urban Transit is a kabushiki gaisha whose major shareholders include the East Japan Railway Company, Tobu Railway, banks, Saitama prefectural government, and the cities and the town served.

[1] As of 1 April 2016[update], the following train types are used on the line, all formed as six-car sets.

[2] The trains have stainless steel bodies with different colour front ends and bodyside stripes.

[8] The people of Ina town, on the branch point of the Tohoku and Joetsu Shinkansen high-speed railway lines, opposed the latter being routed through their area, complaining that the town would be divided by the new tracks and beset with noise pollution.