The DMV: Japan's Bus That Turns Into a Train

A minibus rolls off a coastal road in rural Shikoku, stops at the end of a railway track, and lowers steel wheels onto the rails. Moments later, it pulls away as a train. This is the Asa Kaigan Railway's Dual-Mode Vehicle, or DMV, in Tokushima, Shikoku, and it is the world's first vehicle of its kind in scheduled passenger service. The line still serves locals, and visitors can ride it too.

Quick Answer — What Is the DMV?

The DMV is Japan's dual-mode vehicle: a minibus that lowers guide wheels to run on rails, operated by the Asa Kaigan Railway in Tokushima, Shikoku. It switches between road and rail at dedicated interchange points and, since December 2021, has been the world's first such vehicle in scheduled service. Timetables and booking rules change, so verify current operating details before you travel.

The Transformation

The DMV changes from road to rail in roughly 15 seconds, at interchange points beside Awa-Kainan and Kannoura stations. Passengers stay seated throughout, and that moment is the main reason visitors seek out the DMV.

Arriving at Awa-Kainan by road, the vehicle lines up with the end of the track and stops. Once the driver confirms it is safe, the sequence runs like this:

• A button press lowers steel wheels at the front and rear onto the rails.
• Front rubber tyres lift clear as the steel takes their weight.
• Stepping down, the driver checks the wheels by eye and climbs back aboard.
• Once checked, the DMV pulls away along the track as a train.

At Kannoura, 10 kilometres on, it all runs in reverse.

Why It Exists

The DMV exists because its small coastal line carried too few passengers to justify conventional trains and faced possible closure. Blending bus and rail kept the tracks open and gave the coast a new draw.

The Asa Kaigan Railway, branded in English as the Asa Seaside Railway, serves Kaiyo in Tokushima and Toyo in Kochi, straddling the prefectural border. Its former railcars held around 110 people; a DMV carries 22, a size far closer to actual ridership. With backing from local governments and JR Shikoku, the line switched to three DMVs whose road sections reach beyond the tracks.

A single driver handles fares and drives in both modes, much like riding a rural one-man train.

It is the same fight to keep small lines alive that saved the Kishigawa Line in Wakayama, where a cat stationmaster drew visitors to a struggling route.

Riding It

Tourists can ride the DMV, but each vehicle has just 18 seats plus 3 standing places, so reserving is the safest approach. Walk-up riders board only if seats remain.

The regular route runs from Awa-Kainan Bunkamura along the Pacific to Kannoura, then by road to Michi-no-eki Shishikui Onsen. On weekends and holidays, one daily round trip usually continues to Cape Muroto and the free-entry Muroto Global Geopark Center.

The operator's booking rules typically work like this:

• Reservations open one month ahead, from 9:00 Japan time.
• Seats are booked one way at a time, up to four per booking.
• Walk-up riders pay cash when getting off, and the driver hands back change.

English-language seat reservations for the DMV run through Japan Bus Online, where one-way adult fares range from about ¥200 to ¥2,400 by distance.

Getting There

Reaching the DMV means taking JR trains to Awa-Kainan Station, where the DMV stop shares the site, a scenic journey in itself. From Honshu, the usual route is:

• Okayama to Takamatsu: The Marine Liner takes about 55 minutes to cross the Seto Ohashi into Shikoku on pass-covered JR services.
• Takamatsu to Tokushima: The Limited Express Uzushio takes roughly an hour.
• Tokushima to Awa-Kainan: The JR Mugi Line usually takes two hours or more, often with a change at Mugi.

The Japan Rail Pass covers every JR leg, but not the DMV, which belongs to a separate third-sector railway. Without a pass, single Shinkansen tickets cover the Tokyo to Shin-Osaka leg before you continue to Okayama. The regional All Shikoku Rail Pass also covers Asa Kaigan Railway services except the Muroto section, with pass holders boarding only if seats remain.

Connections at Awa-Kainan do not always line up neatly, so compare Mugi Line times against the DMV's English timetable before fixing your day.

Many visitors stay in Tokushima city first, where Hotel Sunroute Tokushima sits a minute's walk from JR Tokushima Station. Coin lockers at Awa-Kainan Station help if your bags exceed the DMV limit.

Engineering Curiosity

The DMV is a converted microbus with retractable steel guide wheels front and rear, making it the only road-rail vehicle in scheduled passenger service in Japan. The clever part is how it shares weight between steel and rubber:

• Front steel wheels take over from the front tyres, guiding the vehicle along the track.
• Rubber tyres at the back stay down as drive wheels, pushing against the rails.
• Steel wheels at the rear guide the back and adjust how much weight sits on the tyres, depending on passenger load.

Legally, the DMV is a bus under the Road Transport Vehicle Act and a train under the Railway Business Act, an unusual addition to Japan's varied train types. It cannot share track with regular trains, which is why the JR line now stops short at Awa-Kainan.

A Symbol of Rural Innovation

The DMV matters because it shows a small, ageing region adapting its railway rather than losing it. Instead of swapping trains for a bus, local communities built a vehicle that is both.

Rural lines across Japan face the same arithmetic of shrinking towns and empty carriages, and the DMV is perhaps the most literal answer yet: a daily service for residents that also draws visitors to a coastline most itineraries skip. Its real significance is proof that a tiny line can reinvent itself and keep running.

FAQs

Here are answers to some common questions about the DMV:

Q: Where does the DMV run?
A: The DMV runs along Shikoku's southeast coast between Awa-Kainan Bunkamura and Michi-no-eki Shishikui Onsen via Kannoura, reaching Cape Muroto on weekends.

Q: How does it switch modes?
A: At the Awa-Kainan and Kannoura interchange points, steel guide wheels lower onto the rails in a changeover of roughly 15 seconds.

Q: Can visitors ride it?
A: Yes, but with only 18 seats, it is wise to reserve ahead, since reserved passengers get priority and walk-ups board only if seats remain.

Q: What is a dual-mode vehicle?
A: A dual-mode vehicle is a minibus that can also run on railway tracks by lowering guide wheels, and Tokushima's DMV is the world's first in scheduled passenger service.

Q: How much does the DMV cost?
A: One-way adult fares range from about ¥200 to ¥2,400 depending on distance, with the highest fares on the weekend Muroto run.

Q: Does the Japan Rail Pass cover the DMV?
A: No, it covers only the JR trains to Awa-Kainan, whereas the All Shikoku Rail Pass covers most DMV services.

Q: How many people does the DMV carry?
A: Each vehicle holds 22 people, including the driver, with 18 seats and 3 standing places.

Q: Can I bring luggage on the DMV?
A: Only bags up to 120 cm in combined dimensions are allowed, and bicycles, pets, and surfboards are not permitted.

Q: Can I pay with a Suica or other IC card?
A: IC cards are not accepted according to the operator, so pay in cash on board or book online in advance.

Q: Is there a toilet on the DMV?
A: No, so use facilities near the stops before riding.