Driving in Japan requires adjusting to left-hand traffic, Japanese road sign conventions, strict traffic law enforcement, and a driving culture that differs in important ways from North America and Europe. This guide covers the essential rules and cultural norms for safe, confident driving as a foreign resident.
Left-Hand Traffic
Japan drives on the left side of the road — the same as the UK, Australia, and New Zealand. Steering wheels are on the right side of the vehicle. For residents from right-hand traffic countries (USA, Canada, most of Europe), the key adjustment points are: turning left is the tight turn (not wide), turning right requires crossing oncoming traffic, roundabouts flow clockwise, and overtaking happens on the right. The brain adapts within days of regular driving; the most dangerous moments are typically empty roads where there is no traffic context to anchor your position.
Speed Limits
Japan’s posted speed limits are lower than many Western countries:
- Urban roads (市街地) — 40–50 km/h unless otherwise posted
- National roads (国道) — 60 km/h
- Expressways (高速道路) — 100 km/h standard, 120 km/h on designated sections
- Residential areas (生活道路) — 30 km/h in many areas
Speed enforcement is consistent — fixed speed cameras (オービス) are common on national roads and expressways, and their locations are listed in car navigation systems. Police radar traps occur on expressways. Enforcement tolerance is tight; a 30 km/h over limit violation carries a license suspension. Drive at posted limits.
Key Traffic Laws
- Drunk driving (飲酒運転) — Japan has a zero-tolerance policy. The legal alcohol limit for drivers is 0.03% BAC (lower than most Western countries). Penalties are severe: immediate license revocation, criminal charges, and vehicle confiscation. Passengers who knowingly rode with a drunk driver also face penalties. The cultural norm is absolute — “designated driver” (ハンドルキーパー) rotates at social events.
- Mobile phone use — using a handheld phone while driving is illegal and carries significant fines. Hands-free is permitted.
- Seatbelts — mandatory for all occupants in all seats. Child seats required for children under 6.
- Amber light — in Japan, amber means stop (as in many countries) — but Japanese drivers treat it as such far more strictly than is common elsewhere. Do not accelerate through amber at intersections.
Japanese Road Signs
Japan uses its own sign system based on the Vienna Convention with modifications. Most signs are intuitive to international drivers with some exceptions:
- One-way (一方通行) — blue arrow pointing in allowed direction
- No entry (車両進入禁止) — red circle with white horizontal bar (same as European no-entry)
- Pedestrian crossing ahead — distinctive diamond shape with person silhouette
- School zone (スクールゾーン) — yellow diamond with children silhouette; reduced speed and increased vigilance required
- Priority road — diamond shape indicates you have priority; inverted triangle (yield) indicates you give way
Narrow Roads and Passing Culture
Japan’s older residential areas have very narrow roads — often only one car width, shared in both directions. The etiquette: whoever has a passing bay (退避所) nearest to them reverses to allow the other vehicle through. Locals do this automatically; observe and follow. Urban driving requires comfort with tight spaces — Japanese cars are sized accordingly (kei cars, 軽自動車, are popular precisely for their maneuverability in narrow roads).
Parking
Urban parking in Japan is regulated and monitored. Illegal parking results in swift ticketing or towing, plus a license demerit point. Paid parking (コインパーキング) is abundant — mechanical barriers prevent leaving without payment. Many convenience stores prohibit using their parking for anything other than store visits. If you own a car in Japan, you must prove you have a parking space (車庫証明) before purchase registration — this is the law.