One-man operation

A wanman train on the Flower Nagai Line at Akayu Station

The fare collection machine on a wanman train

One-man operation (OMO), driver-only operation (DOO) or one person operation (OPO) is a method of train or bus operation in which the vehicle is operated by the motorman or driver alone without a conductor.^[1]

Japan

In Japan, this is used in the operation of many trains and buses which are designated by a green sign on the front of the train reading (wanman (ワンマン運転, wanman unten^?)). The term wanman is the katakana transcription of one man.

References

1. ^ David Lowe (2002), The dictionary of transport and logistics‎, p. 172