Denmark vs Japan: Driving Rules Compared

Swap between Denmark and Japan and the steering wheel changes sides — Japan is left-hand traffic, Denmark right-hand — so give yourself a day to adjust before tackling city driving. Motorway limits sit at 130 versus 100 km/h, and the comparison below lines the rest up rule by rule.

Denmark drives on the right while Japan drives on the left. This is one of the most significant adjustments drivers must make when travelling between these two countries. Take extra care at junctions, roundabouts, and when overtaking.

💡 Try it yourself: Speeding Fine Calculator 2026 — it covers Japan (not yet Denmark), free.

Speed Limits Comparison

Speed limits differ between Denmark and Japan, and understanding these differences is essential for avoiding fines.

Drivers in Denmark should observe limits of 50 km/h in built-up areas, 80 km/h on rural roads, and 130 km/h on motorway stretches.

Japan sets its speed limits at 40 km/h in cities and towns, 60 km/h on country 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.

Key Speed Limit Differences

Drivers transitioning between Denmark and Japan 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, Denmark and Japan have several important differences in their general traffic rules.

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

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

Mobile phone use: Using a handheld mobile phone while driving is illegal in both countries. In Denmark, the penalty is DKK 1,500 (approx. EUR 200). In Japan, the penalty is JPY 18,000 (approx. EUR 115) + 3 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 Denmark and Japan. The fine for not wearing a seatbelt is DKK 1,500 (approx. EUR 200) in Denmark and Warning / 1 point (no fine for first offence) in Japan.

Running a red light: Red-light violations carry serious penalties. In Denmark, expect DKK 1,000 (approx. EUR 135). In Japan, the penalty is JPY 9,000 (approx. EUR 55) + 2 points.

Alcohol and DUI Laws

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

Denmark sets its blood alcohol concentration (BAC) limit at 0.05%.

Japan has a BAC limit of 0.03%.

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

Penalties for exceeding the BAC limit in both Denmark and Japan 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 Denmark or Japan, check that your vehicle carries all the legally required equipment. Requirements differ between the two countries.

Winter Tyres

• Denmark: Winter tyres are not mandatory. Studded tyres: restricted. Minimum tread depth: 1.6 mm.
• Japan: Winter tyres are situational. Period: Prefectural regulations; Hokkaido, Tohoku require winter tyres in winter. Studded tyres: restricted. Minimum tread depth: 1.6 mm.

Mandatory Equipment

If renting a vehicle, verify with the agency that it includes mandatory equipment for both Denmark and Japan, especially if you plan to cross the border.

Speeding Penalties

The financial consequences of speeding vary between Denmark and Japan.

In Denmark, a minor speeding offence (approximately 10 km/h over the limit) typically results in: DKK 1,000 (approx. EUR 135). Penalties escalate significantly for higher speeds, and repeat offenders face licence suspension.

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.

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.

Denmark: 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. IDP recommended for non-EU visitors.

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.

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

Knowing the local emergency numbers could save your life. Here are the key contacts:

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 Denmark and Japan:

1. 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.

2. 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.

3. Watch for different road signs. While European countries share many sign conventions, there are country-specific signs you should recognise. Review a local driving guide before your trip.

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

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

6. 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.

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. Be aware of environmental zones. Many cities have low-emission zones that restrict older vehicles. Check if you need an environmental sticker for either country.

Which Country Is Easier for Tourists to Drive In?

Which country is easier to drive in depends on your experience level, where you are from, and what conditions you are used to.

Denmark is rated 1.9/5 (Very Easy) by tourists. Excellent infrastructure, heavy cycling, bridge tolls

Based on tourist ratings, Japan scores 3.0/5 (Moderate). Left-hand driving, expensive tolls, excellent roads, kanji signage

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

Frequently Asked Questions

Can I drive in Japan with a Denmark 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 Denmark compared to Japan?

The motorway speed limit in Denmark is 130 km/h, while in Japan it 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). Always watch for posted signs, as limits may vary on specific sections due to roadworks, weather, or local restrictions.

Are winter tyres mandatory in Denmark or Japan?

In Denmark, winter tyres are not mandatory (no specific period). In Japan, they are situational (Prefectural regulations; Hokkaido, Tohoku require winter tyres in winter). 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?

Japan has a stricter BAC limit (0.03%) compared to Denmark (0.05%). Lower limits mean less alcohol is tolerated before driving becomes illegal.

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

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

Can I use my car insurance from Denmark in Japan?

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

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

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