Driving in Japan

The first hurdle to driving in Japan is licensing. If you do not have a Japanese license, you must have a valid International Driving Permit (IDP) from a 1949 Geneva Convention on Road Traffic country to be able to drive. In addition, driving licenses from Switzerland, Germany, France, Belgium, Monaco and Taiwan can be used if you have an accredited Japanese translation. The JAF's website has more information, and offers translation services for some national licenses both in their branch offices all over the country and online (though you must be in Japan even for the online service). Your own country's automobile club equivalent may offer similar services outside of Japan, if you need to hit the ground running. If your country is on neither of these lists, you cannot legally drive in Japan without first obtaining a Japanese driver license, which can be very time-consuming and expensive.

Japanese driving habits are generally as good as anywhere else, and usually better than other Asian countries. Japanese roads are generally of good quality, with smooth bitumen surfaces. Gravel roads are very limited, usually forest roads, and unlikely to be on the itinerary of too many tourists. Roadworks are frequent however, and can cause annoying delays. In addition, snow can often accumulate on roads in much of Hokkaido and western Honshu, making it tricky to drive even on the freeways. Certain mountain passes are shut over winter, those that are not usually require either snow chains or a combination of studless winter tires and 4-wheel drive. If you rent a car in mountainous/northern areas they will generally come with this equipment already included.

Rental rates typically start from ¥6000 a day for the smallest car. Purchasing insurance from the rental car company is highly recommended as any rental car insurance from your home country (especially through most credit cards) is unlikely to be valid in Japan, check your policy before heading out.

Driving is on the left as normally found in the United Kingdom, Australia, New Zealand, India and Singapore, but opposite to continental Europe, the United States and Canada. Most cars are right-hand drive, though imported cars from Europe or the United States are usually left-hand drive.

There is no "right turn on red" (or left turn, rather) rule in Japan, however in rare cases a sign with a blue arrow on a white background will indicate where turning on red is legal (not to be confused with the white arrow on a blue background, which indicates one-way traffic). Drivers are required to make a complete stop at all at-grade railway crossings.

Using a cell phone while driving without a hands-free kit can result in fines of up to ¥50,000.

Driving drunk is not tolerated at all. While the minimum for "driving drunk" is a breath (not blood) content of 0.15 mg/L (equivalent to 0.03% BAC), "driving under the influence" has no minimum, meaning police can charge you with even a whiff of alcohol. Penalties include fines up to ¥1 million, up to 5 years in jail, and immediate suspension or revocation of your license. Refusal to take a breathalyzer test also carries fines up to ¥500,000 and up to 3 months jail. Passengers can also be charged (for allowing the drunk person to drive), with similarly severe fines and jail time.

Rental car companies generally offer smaller cars from ¥5,000 a day, often yellow-plate kei (軽, "light") cars with underpowered 660cc engines. While kei cars are handy for zipping around cities, easy to park and motorway legal, they can be very cramped inside and are no fun for longer journeys. A full size sedan will cost around ¥10,000 a day. Some providers, notably Times, offer hourly rentals but the sign up process is too much hassle for the typical one-off traveller.

Most rental cars have some kind of satellite navigation (カーナビ "car navi"), and you can ask the rental car company to set your destination before your first trip. Some models (specifically newer Toyotas) have an English language mode, so it doesn't hurt to ask the staff to change it before you head out. However unless you read Japanese you may need to ask for assistance to make full use of the navigation computer. Searching by phone number is often the fastest way to navigate to your destination. As of 2024, Android Auto/Apple CarPlay integration, where you can just plug in your own phone, remains rare in rental cars.

Fuel is more expensive than the USA, but generally cheaper than Europe. Most fuel stations are full service, to fill up the tank with regular fuel, say regulaa mantan to the attendant.

Expressways (高速道路 kōsoku-dōro, often abbreviated as XX道 or XX高速, where XX is a general direction or the starting and ending cities of the expressway) form the backbone of the Japanese road network, and are the fastest way to travel by car. However, the tolls are often significantly higher than the cost of a train ride, even on the bullet train. So for one or two people it's not cost-effective for direct long distance travel between cities. On the other hand, some expressways have toll-free sections, and a few of them are entirely toll-free. The Meihan Expressway from Kameyama to Nara and the Tottori Expressway from Tottori to Sayō are some examples of entirely toll-free expressways.

Rental cars are virtually always equipped with an ETC (electronic toll collection) device in the glovebox, which entitles you to use the purple ETC-only (ETC専用) lanes at toll booths and make use of a wide variety of discount programs for driving on weekends, off-peak hours, etc. However, you also need an ETC card to slot into the device: you can rent one for around ¥300 (flat fee) and settle the bill with your rental company when returning the card. Alternatively, you can still pay by yen cash or credit card at almost all toll plazas by choosing the green lanes.

In major cities such as Tokyo and Osaka, a flat rate toll is paid when entering the expressway system, while on inter-city expressways, tolls are based on distance travelled, a ticket is issued when you enter the system and the toll is calculated when you exit.

The speed limits of Japanese expressways are significantly lower than other countries, usually with 70-100km/h for most expressways. There are plans to raise the speed limit for some expressways, such as sections of Shin-Tōmei Expressway and Tōhoku Expressway.

There are also some minor toll booths known as smart interchanges that only accept ETC as the only way of payment, which are marked with purple signs.

Besides expressways, privately-built roads, often branded skyline (スカイライン) or equivalent (aqualine, beachline etc), may also be toll roads.

Inter-city expressways (usually referred to as XX線) are well-serviced with clean and convenient parking areas at regular intervals, but be wary of travelling into large cities on Sunday evenings or at the end of a holiday period, as traffic jams at these times can reach up to 50 km long.

Using local roads to travel between cities has the advantages of being toll-free and offering more opportunities for sightseeing along the way, but traffic jams and numerous traffic lights slow things down considerably. Covering 40 km in 1 hour is a good rule of thumb to follow when planning an itinerary on local roads, generally more on Hokkaido.

Outside expressways, road conditions can vary largely. Consider using proper navigation applications or maps to plan your journey.

Navigating within cities can be confusing and parking in them costs ¥300-400/hour. Larger hotels in the cities and regional hotels normally offer car parking, but it would be wise to check car parking however before you book. Validated parking is available at some car parks that are attached to major department stores in large cities, but don't count on getting more than 2–3 hours free. The best car to use in Tokyo is a taxi.

Virtually all road signage in Japan is bilingual, as are all signs installed since 2017.

Japan has horizontal traffic lights, with any arrows appearing beneath the main lights. The red (stop) is on the right and the green (go) is on the left. There are usually only one or two traffic lights per intersection pointing the same way, which can make it hard to see when the signals change. However some prefectures, such as Toyama and Niigata, have vertical lights (this is due to the amount of snow they get).

Japanese signs follow a mixture of European and North American conventions, but most should not pose any difficulty in understanding. "Stop" is indicated by a downward-pointing red triangle, not to be confused with the similar looking Yield sign found in North America. On the highways and around major cities English signage is very good; however in more remote locales it may be spotty. Electronic signs are everywhere on expressways and major arterial roads, and provide helpful real-time information on road conditions, unfortunately they are displayed exclusively in Japanese. The following is a brief list of the most common messages and their translations:

• 通行止 — Road Closed
• 渋滞 — Traffic Jam (with length and/or delay indicated)
• 事故 — Accident
• 注意 — Caution
• 徐行 — Drive Slow
• チェーン規制 — Chains Required
• 别料金 — Surcharge, usually occur in transitional sections between city expressways and trunk expressways

Warning hazards for repair, breakdown and construction are always well illuminated at night and tend to also appear at least once before the main obstacle on higher speed roads such as expressways. Other road hazards to be aware of are taxis, who feel they have a god-given right to stop wherever and whenever they like, long-distance truckers (especially late at night) who may often be hepped up on pep pills and tend to ride the bumper of any slower car in front, and country farmers in their ubiquitous white mini-trucks, who never seem to go above a crawl and may pop out of rural side roads unexpectedly.

Road speed limits are marked in kilometres per hour. They are 40 km/h in towns (with varying areas: some at 30, roads by schools usually at 20), 50 to 60 in the countryside (if unmarked, the limit is 60), and 100 on the expressways (some sections allow 110 or 120). There is usually a fair bit of leeway in terms of speeding - about 10 km/h on normal roads, for example. If you go with the flow you should not have any problems, as the Japanese often pay speed limits no more attention than they have to.

If you are stopped by police for speeding, there is no talking your way out, you will be ticketed ¥9,000-18,000. Speeding 30+ km/h over the limit is grounds for instant license revocation.

When traveling long distances by car, Japan has motorists covered with a number of rest areas both on and off the highway.

On the expressways, drivers will find two types of rest areas:

• The most basic rest areas are called Parking Areas (パーキングエリア, abbreviated PA). Parking Areas usually contain restrooms, vending machines and WiFi hotspots, but smaller PAs may only provide nothing more than limited parking spaces, especially for those of urban expressways. Some may also include a convenience store or restaurant.
• The larger, busier rest areas are called Service Areas (サービスエリア, abbreviated SA). In addition to the basic amenities, a Service Area typically includes restaurants, convenience stores, souvenir shops, a gas station, and charging stations for electric vehicles. Some may include shower facilities or a hotel.

Parking Areas and Service Areas are spaced out on the highway at regular intervals, with Parking Areas more common than Service Areas. As an example, drivers using the Tomei Expressway between Tokyo and Nagoya will pass a SA or PA every 15-20 km, with Service Areas spread out about every 50 km.

If traveling on one of Japan's main non-toll roads, you will run into plenty of Roadside Stations, referred to as Michi no Eki (道の駅). These government-designated rest areas offer 24-hour access to parking and restrooms. During business hours, these stations may also sell local food, snacks and souvenirs and offer travel and sightseeing information. There are more than 1,200 Michi no Ekis in Japan as of 2023. They are in themselves worthy destinations and there are even bus tours mainly visiting Roadside Stations.

As Japan is an island nation, there are various car ferries run across islands. The following lists some of the routes: