This private company operates railway, tram, and bus services in the eastern part of the prefecture.

The current company was founded in 1943, when all the private and public operators of railway, tram, and bus lines in the prefecture were merged into one.

The Main, Branch, Yasunoya and Kureha lines effectively make a single route, from Minami-Toyama-Ekimae to Daigaku-mae.

The company operates local bus lines in the whole eastern part of the prefecture, including Toyama City.

It also operates many highway buses linking Toyama City and other parts of Japan, including Tokyo, Osaka, Nagoya, and Kanazawa.