Japan on a Brazilian Licence — Your IDP Won't Work, and the Side Switch

Before anything else about Japan, deal with the paperwork — because the permit most Brazilians already hold is the one Japan rejects.

Brazil issues its International Driving Permit under the 1968 Vienna Convention. Japan never signed that treaty; it recognises only the older 1949 Geneva Convention permit. So a Brazilian IDP, valid across most of Europe and South America, is worthless at a Japanese rental desk. What you actually need is an official Japanese translation of your Brazilian licence, issued by the Japan Automobile Federation (JAF) or the Brazilian embassy, carried together with the original licence and your passport. Sort it before you fly, or arrange the JAF translation on arrival — rental companies will not hand over keys without it. If you’re unsure which document applies to you, run your details through the Driving Permit Checker first.

With that solved, the road itself asks one big thing of you: Japan drives on the left, and Brazil drives on the right. The translation gets you the car; the side switch is what catches you out in the first hour. The trouble spots are predictable — pulling out of a konbini car park, taking a roundabout that now flows clockwise, the instinctive look the wrong way at a give-way line. Spend your first stretch on a quiet road, not threading through central Tokyo, and stay deliberate at every junction until left starts to feel normal.

Speeds in Japan are lower than Brazilian roads run. Towns are signed at 40 km/h, ordinary rural roads at 60, and even the expressways top out around 100 km/h — slower than the 110 you’re used to back home. Enforcement leans heavily on cameras: fixed gantries and unmarked mobile units are everywhere, and tolerance is slim. Drifting roughly 10 km/h over costs about JPY 9,000 (≈ €55) plus a penalty point; you can size up a specific overage on the speeding fine calculator.

On alcohol, the rule is one you already live by. Japan’s limit is 0.03 BAC — close to zero, and below the threshold of detection for most drinkers — and Brazil’s Lei Seca taught you the only safe number is none. Japanese police treat drink-driving as a serious crime, not a fine, with on-the-spot licence confiscation and the chance of detention.

A few practicalities. The car must carry a warning triangle. Petrol runs about $1.35/litre, cheaper than you might fear. The general emergency number is 110 for police, 119 for ambulance and fire. Expressway tolls are steep, so factor those into any long drive. The full breakdown of signage, tolls and regional rules sits on our Japan driving guide.