Wanman trains: the rural Japanese lines where only the front door opens

The two-car diesel slows into a platform with no station building, only a shelter, a timetable board and a field behind it. A traveller in the rear car stands at the door with a bag on each shoulder and waits. The door does not move. Up ahead, three people step off beside the driver, the engine note rises, and the platform slides away. Nothing was broken; the train was a wanman, and the exit was a carriage-length forward.

What the word on the front of the train means

ワンマン (wanman) is borrowed from the English one-man, and it means the train has a driver and no conductor. The word sits on a plate in the cab window or lit up beside the destination. On the JR Koumi Line (小海線, Koumi-sen), which climbs from Kobuchizawa (小淵沢) toward Komoro (小諸), and on the Iiyama Line (飯山線, Iiyama-sen) through Nagano's snow country, it is the ordinary way a local train runs.

The consequence is that the driver also does the work of a ticket gate. At larger stations with staff, the doors open as usual and you pass a gate or a window on the way out. At a 無人駅 (mujin-eki), a station with no staff at all, nobody is on the platform to take a ticket, so the fare is settled on board before you step down.

At an unstaffed station, the train is the ticket gate.

Which door opens, and in which car

The usual pattern has a name: 後ろ乗り前降り (ushiro-nori mae-ori), board at the back, leave at the front. In practice that means the rear door of the leading car to get on, and the door directly behind the driver's cab to get off. Stickers on the glass mark them 入口 (iriguchi, entrance) and 出口 (deguchi, exit), and those two words are worth learning by shape.

On a two-car train, the second car often stays shut at unstaffed stops. A recorded announcement says so before each one; the phrase to catch is ushiro no sharyō no doa wa akimasen, the doors of the rear car will not open. If you hear it from the rear car, walk forward through the connecting door while the train is still moving. Regular passengers do this a stop early.

後ろの車両のドアは開きません。

The arrangement differs between operators. Some busier driver-only services open the whole train and leave tickets to the station, so the stickers and the announcement are more reliable than a rule carried over from the last line you rode.

The button beside the door

Many of these trains also have 半自動ドア (han-jidō doa), semi-automatic doors. The driver releases them, but each door opens only when someone presses the button next to it. Outside there is a single button; inside there are two, marked 開 (ake, open) and 閉 (shime, close), and a small lamp lights when they are live.

The system keeps heated or cooled air in the carriage during long stops, which is why you meet it in the mountains and the north, and also closer to Tokyo than expected: trains on the JR Ōme Line (青梅線, Ōme-sen) toward Okutama (奥多摩) commonly work this way. Wait for the lamp, press once, and step through. If you are the last one in on a cold day, pressing 閉 behind you is the small courtesy locals observe.

Paying the driver

Just inside the entrance door, a small machine issues a 整理券 (seiriken), a numbered slip that records where you boarded. Above the cab a display lists those numbers with a fare under each, and the figure under yours rises as the train moves along the line. When your stop is next, go forward and drop the slip and the coins together into the 運賃箱 (unchin-bako), the fare box beside the driver.

The box takes exact money and gives nothing back. Change comes from a separate slot on the same unit labelled 両替 (ryōgae), which breaks coins and small notes into smaller coins; large banknotes are commonly refused. Use the changer while the train is running rather than at the door. If you already hold a paper ticket or a rail pass, you show or hand it to the driver instead.

Some unstaffed platforms have a box on a post that dispenses a 乗車駅証明書 (jōsha-eki shōmeisho), a slip certifying where you got on. It does the job of a seiriken on trains that do not issue one, and you pay from it on board or at the staffed station where you leave.

Where an IC card stops being useful

Suica, ICOCA and their relatives work inside defined areas, and many driver-only lines run outside them or cross the edge partway. Tap in at a city gate, ride past the boundary, and there is no reader at the other end. You pay the driver in cash for the whole journey, and the card stays marked as mid-trip until staff at a station inside its area clear it. Drivers often hand over a slip confirming the cash payment; keep it, because it shortens that conversation.

Inside the IC area, small unstaffed stations often replace the gate with two readers on posts, called 簡易改札機 (kan'i kaisatsuki). One is for 入場 (nyūjō, entering) and one for 出場 (shutsujō, leaving), usually in different colours and a few steps apart. Tapping the wrong one is easy when you are hurrying, and it produces an error at the next proper gate.

Before you board a two-car train

These are the trains that reach places worth the detour: the Koumi Line to the highland stops at Kiyosato (清里) and Nobeyama (野辺山), the Iiyama Line to Togari-Nozawaonsen (戸狩野沢温泉), the Ōme Line to the trailheads at Okutama. Services are sparse by city standards, with long gaps in the middle of the day, so read the operator's timetable before choosing a morning. The printed timetable at the station marks which departures run as wanman, and the operator's station pages say whether a given stop has staff.

Fares depend on distance and are posted on a chart in the station shelter as well as on the display in the train. Confirm them with the operator, which for the lines named here is JR East, and expect cash to be the practical way to pay at the far end. Arrive with coins and small notes in a pocket you can reach with a bag on.

The mistake to avoid is the one that opened this piece: settling into the rear car with headphones in. Sit in the front car from the start, facing the fare display if you can, and keep the slip where you will find it. The rest is watching the number under yours change and standing up one stop early.