Medical costs, driving rules & natural hazards in Japan

Japan is a remarkably safe destination overall, but a handful of practical rules — around health costs, driving, ID checks, and natural hazards — can catch visitors off guard. Knowing these before you go means fewer surprises and a smoother trip.
What should I know about medical emergencies?
Emergency treatment in Japan is expensive, and you're expected to pay the full cost of any care you receive. Foreigners with a history of unpaid medical bills can even be refused entry to Japan in future. Because of this, take out private medical insurance with adequate coverage before you travel. If you need an ambulance, dial 119, and if you're referred for treatment, contact your insurance company as quickly as possible.
Is driving in Japan straightforward for visitors?
Driving is on the left, and roads are generally well maintained, but a few local rules matter. As a short-term visitor you need the 1949 version of the International Driving Permit, plus your home driving licence and insurance documents, in the car — driving without these can lead to arrest and a fine. Japanese Compulsory Insurance is mandatory for all car owners and drivers, though it may not cover personal liability fully, so voluntary insurance is worth considering. Seat belts are required for everyone in the vehicle, and turning right or left on a red light is not allowed. Japan's drink-driving limit is 0.03% blood alcohol — about a third of the UK limit — and penalties include fines and possible imprisonment, with penalties too for letting someone else drink and drive. On the road, watch for pedestrians crossing on green lights at junctions, cyclists riding against traffic or without lights at night, and sudden braking from other drivers. Cyclists themselves are bound by traffic law too — using a phone or riding under the influence while cycling can lead to arrest.
What ID and legal rules should I keep in mind?
Always carry your passport or Japanese residence card — police can arrest you if you can't show proof of visa or residence status. It's also worth knowing that Japan allows arrest and detention without charge for up to 23 days, even for minor offences like theft or trespassing, which is very different from UK law.
How do I stay informed about natural hazards?
Japan sits in a major earthquake zone and has active volcanoes, so monitor updates from the Japan Meteorological Agency and follow instructions posted in hotels and train stations. Typhoon season runs June to December, peaking July–September, with the greatest risk in southern Japan — track storm forecasts and heed any evacuation orders. The "Safety tips" app, backed by the Japan Tourism Agency, sends alerts in 14 languages for earthquakes, tsunamis, severe weather, volcanic activity, evacuations, and heatstroke risk.
FAQ
Who can I call for help as a tourist? The Japan National Tourism Organization runs 24-hour phone support (050-3816-2787) in English, Chinese, Korean, and Japanese, covering accidents, illness, disasters, and general tourist queries.
Do I need travel insurance? Yes — given the high cost of emergency treatment, sufficient private medical insurance is strongly recommended before you travel.
What's the emergency number for medical help? Dial 119 and ask for an ambulance.
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