Japan vs Slovakia: Driving Rules Compared

Slovakia leaves no room at all for alcohol behind the wheel, a 0.0 limit, while Japan permits a narrow 0.03 margin instead. The road position flips as well, Japan’s left-hand traffic sitting opposite Slovakia’s right-hand rule. Motorway ceilings widen the gap further, 100 km/h in Japan against 130 km/h in Slovakia.

One of the biggest differences between Japan and Slovakia is the driving side: Japan uses left-hand traffic, while Slovakia uses right-hand traffic. Drivers need to be especially cautious at intersections and roundabouts during the transition.

Speed Limits Comparison

One of the most practical differences for drivers is the variation in speed limits between Japan and Slovakia.

In Japan, the standard speed limits are 40 km/h in urban areas, 60 km/h on rural roads, and 100 km/h (100 km/h standard; 120 km/h on select expressway sections (Shin-Tomei, Tohoku, Joban). From Sept 2026, narrow residential roads default to 30 km/h) on motorways.

Slovakia sets its speed limits at 50 km/h in cities and towns, 90 km/h on country roads, and 130 km/h on motorways.

Key Speed Limit Differences

Drivers transitioning between Japan and Slovakia should pay close attention to posted signs, as assumptions based on one country’s rules can lead to speeding tickets in the other. Speed cameras are common in both countries, and enforcement can be strict.

Traffic Rules and Regulations

Beyond speed limits, Japan and Slovakia have several important differences in their general traffic rules.

Driving side: Japan drives on the left; Slovakia drives on the right. This is a major difference that requires careful adjustment.

Minimum driving age: The minimum age to drive a car is 18 in Japan and 17 in Slovakia.

Mobile phone use: Using a handheld mobile phone while driving is illegal in both countries. In Japan, the penalty is JPY 18,000 (approx. EUR 115) + 3 points. In Slovakia, the penalty is EUR 100-200 + 2 penalty points. Hands-free devices are generally permitted in both countries, but drivers should keep their attention on the road.

Seatbelts: Seatbelts are mandatory for all occupants in both Japan and Slovakia. The fine for not wearing a seatbelt is Warning / 1 point (no fine for first offence) in Japan and EUR 60-150 in Slovakia.

Running a red light: Red-light violations carry serious penalties. In Japan, expect JPY 9,000 (approx. EUR 55) + 2 points. In Slovakia, the penalty is EUR 150-600 + 4 penalty points.

Alcohol and DUI Laws

Alcohol and driving regulations differ between Japan and Slovakia, and the penalties for non-compliance can be severe in both.

Japan sets its blood alcohol concentration (BAC) limit at 0.03%.

Slovakia has a BAC limit of 0.00% (zero tolerance).

Slovakia has a stricter limit, so drivers accustomed to Japan’s rules should exercise extra caution.

Penalties for exceeding the BAC limit in both Japan and Slovakia can include heavy fines, licence suspension, and even imprisonment. Novice drivers face even stricter thresholds in many countries. The safest policy is to not drink at all when you plan to drive.

Tyre and Equipment Requirements

Before driving in Japan or Slovakia, check that your vehicle carries all the legally required equipment. Requirements differ between the two countries.

Winter Tyres

• Japan: Winter tyres are situational. Period: Prefectural regulations; Hokkaido, Tohoku require winter tyres in winter. Studded tyres: restricted. Minimum tread depth: 1.6 mm.
• Slovakia: Winter tyres are mandatory. Period: 15 Nov - 31 Mar. Studded tyres: prohibited. Minimum tread depth: 1.6 mm.

Mandatory Equipment

Rental vehicles usually come equipped for the country of hire. If you intend to drive in both Japan and Slovakia, check with the rental company that the vehicle has all required items for both destinations.

Speeding Penalties

The financial consequences of speeding vary between Japan and Slovakia.

In Japan, a minor speeding offence (approximately 10 km/h over the limit) typically results in: JPY 9,000 (approx. EUR 55) + 1 point. Penalties escalate significantly for higher speeds, and repeat offenders face licence suspension.

In Slovakia, a minor speeding offence (approximately 10 km/h over the limit) typically results in: EUR 30-100. Penalties escalate significantly for higher speeds, and repeat offenders face licence suspension.

Both countries use a combination of fixed speed cameras, mobile speed traps, and in some cases average speed (section control) cameras.

Licence Requirements for Visitors

Before driving in {a} or {b}, ensure you have the correct documentation. Requirements for international visitors vary.

Japan: An IDP is required. Visitors can typically drive for up to 12 months on a foreign licence IDP required (1949 Geneva Convention only). US, UK and many EU licences need specific IDP. Drives on the left.

Slovakia: An EU/EEA driving licence is valid. An IDP is recommended for non-EU licence holders. Visitors can typically drive for up to 12 months on a foreign licence EU/EEA licences valid. Non-EU visitors need IDP.

Always carry your licence (and IDP if applicable) while driving, as police may request to see it during routine checks or traffic stops.

Emergency Numbers

Save these emergency numbers before travelling to Japan or Slovakia:

Save these numbers in your phone before travelling. In an emergency, quick access to the correct number is crucial.

Practical Tips for Driving in Both Countries

Preparation is key to a smooth driving experience abroad. Here are tips for driving in Japan and Slovakia:

1. Plan fuel stops. Fuel prices and station availability can vary significantly. In some regions, stations may close at night or on Sundays.

2. Use a GPS or navigation app. Modern navigation apps often include speed limit warnings, toll information, and real-time traffic updates that can help you comply with local rules.

3. Understand toll systems. Research whether you need a vignette, transponder, or cash for tolls in each country.

4. Carry the right documents. Ensure you have your driving licence, IDP (if needed), vehicle registration, and insurance documents. Some countries require you to carry these at all times.

5. Respect local driving culture. Overtaking norms, horn usage, and right-of-way conventions differ. Observe local drivers and adapt accordingly.

6. Research before you go. Familiarise yourself with the specific rules of each country before your trip. Print or save a summary of key rules for quick reference.

7. Adjust to speed limits immediately. When crossing the border, speed limits change. Look for signs and adjust your driving accordingly. Do not rely on habits from the other country.

8. Check insurance coverage. Verify that your motor insurance or rental agreement covers driving in both countries. A Green Card may be required for cross-border travel.

Which Country Is Easier for Tourists to Drive In?

Tourist-friendliness of driving varies between Japan and Slovakia based on several factors.

Japan is rated 3.0/5 (Moderate) by tourists. Left-hand driving, expensive tolls, excellent roads, kanji signage

Tourist reviews give Slovakia a driving ease score of 2.6/5 (Easy). Improving roads, vignette required, mountain passes in winter

The switch between left-hand traffic in Japan and right-hand traffic in Slovakia is the single biggest adjustment drivers will face.

Frequently Asked Questions

Can I drive in Slovakia with a Japan driving licence?

Rules vary by nationality. Check the specific licence requirements for each country, and consider obtaining an International Driving Permit (IDP) before your trip.

What is the speed limit on motorways in Japan compared to Slovakia?

The motorway speed limit in Japan is 100 km/h (100 km/h standard; 120 km/h on select expressway sections (Shin-Tomei, Tohoku, Joban). From Sept 2026, narrow residential roads default to 30 km/h), while in Slovakia it is 130 km/h. Always watch for posted signs, as limits may vary on specific sections due to roadworks, weather, or local restrictions.

Are winter tyres mandatory in Japan or Slovakia?

In Japan, winter tyres are situational (Prefectural regulations; Hokkaido, Tohoku require winter tyres in winter). In Slovakia, they are mandatory (15 Nov - 31 Mar). If you are travelling during winter months, it is advisable to use winter tyres regardless of legal requirements for safety.

Which country has stricter drink-driving laws?

Slovakia has a stricter BAC limit (0.00% (zero tolerance)) compared to Japan (0.03%). Lower limits mean less alcohol is tolerated before driving becomes illegal.

What side of the road do they drive on in Japan and Slovakia?

Japan drives on the left side and Slovakia drives on the right side of the road.

Can I use my car insurance from Japan in Slovakia?

International motor insurance coverage varies by provider and policy. Contact your insurer before travelling to confirm coverage in both Japan and Slovakia. You may need to purchase additional local insurance.

What emergency number should I call while driving in Japan or Slovakia?

In Japan, the general emergency number is 110 (police: 110, ambulance: 119). In Slovakia, call 112 (police: 112, ambulance: 112). Save both numbers in your phone before you travel.