Local services on the Myōkō Haneuma Line use a fleet of ten ET127 series 2-car electric multiple unit (EMU) trains transferred from JR East.

The eastern section of the line is electrified at 1,500 V DC and the western section of the line is electrified at 20 kV AC (60 Hz) overhead, with a dead section separating the two different power supplies between Itoigawa and Kajiyashiki stations, but in order to eliminate the need to procure new dual-voltage rolling stock, local services on the Nihonkai Hisui Line use a fleet of eight new ET122 single-car diesel multiple unit (DMU) trains based on the JR West KiHa 122 series design.

[2] Until March 2017, a seasonal, limited-stop Rapid service, operating between Niigata and Itoigawa, ran once a day in each direction using a 6-car JR East 485 series EMU.

[1] The company was formally granted a railway operating license by the Ministry of Land, Infrastructure, Transport and Tourism on 28 February 2014.

[7] A two-car ET122-1000 series diesel multiple unit resort train entered service from 23 April 2016, operating over both of the ETR lines.