Trailer Towing Laws in Europe 2026 — Where Your Licence Stops Being Enough

Trailer towing laws — the quick answer

Towing changes the rules: above a combined weight of 3,500 kg most countries require an extra licence category (B+E), and towing speed limits usually run 10-20 km/h below the solo-car limit. Widths, mirror rules and even weekend towing bans differ by country, and getting the weight maths wrong can void your insurance. The country-by-country towing laws are below.

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For anyone planning a caravan holiday across Europe, towing a boat to a foreign launch site, or moving belongings internationally, understanding the towing laws of every country on the route is essential. Ignorance of these rules can result in fines, points, insurance invalidation, or even vehicle impounding.

This guide covers towing regulations across more than 40 countries, providing the information you need to tow safely and legally. For general driving rules in each country, visit our country-specific guides.

Licence Requirements for Towing

European Union

The EU harmonised towing licence requirements under the Third Driving Licence Directive:

Important: The B licence weight limit refers to the Maximum Authorised Mass (MAM), not the actual loaded weight. If the MAM of vehicle plus trailer exceeds 3,500 kg, you need additional entitlement regardless of actual load.

Pre-1997 licences: In many EU countries, driving licences issued before 1 January 1997 carry automatic B+E entitlement, allowing towing of heavier trailers. Check your specific licence document.

Country-Specific Licence Variations

For US state-specific towing regulations, check our state guides.

Speed Limits When Towing

Towing speed limits are almost universally lower than regular limits:

In Germany, while the autobahn has no general speed limit, vehicles towing trailers are limited to 80 km/h (with a possible increase to 100 km/h if the trailer meets specific technical requirements and is approved). Check German driving rules for full details.

Weight Limits and Calculations

Understanding Towing Weights

Key Weight Rules

Weight Limits by Country

Equipment Requirements

Mandatory Towing Equipment by Country

Towing Mirrors

Most European countries require extended towing mirrors when the trailer is wider than the towing vehicle. The mirrors must provide visibility of:

• At least 4 metres width behind the vehicle
• 20 metres behind the driver’s position

Failure to use appropriate mirrors is a fineable offence in most EU countries, typically EUR 15-50.

Country-Specific Towing Rules

France

• Speed limit drops to 90 km/h on autoroutes for vehicles with combined MAM over 3,500 kg
• Mandatory reflective strips on caravan sides
• Warning triangle must be carried
• Breathalyser kit recommended for the towing vehicle
• Check our France driving guide for full requirements

Italy

• Towing speed limited to 70 km/h on single carriageways
• Headlights must be on at all times outside urban areas (including towing vehicle)
• Reflective jacket must be accessible
• Some mountain roads prohibit trailers during peak periods

Austria

• Trailers approved for 100 km/h on motorways display a special sticker
• Winter equipment requirements apply to both vehicle and trailer
• Some Alpine passes have seasonal or permanent trailer restrictions
• Visit our Austrian driving page for details

Switzerland

• Trailers over 3,500 kg require a special permit
• Certain mountain passes prohibit trailers (e.g., some Gotthard approach roads during peak times)
• Motorway vignette is required for both the towing vehicle and the trailer
• Swiss driving rules have additional requirements

Scandinavia

• Studded tyres required on trailer wheels during winter tyre season (if used on towing vehicle)
• Many ferry services charge per metre of vehicle length including trailer
• Speed limits strictly enforced with heavy fines

Tyre Requirements for Trailers

Trailer tyres are subject to the same legal requirements as vehicle tyres, plus some additional considerations:

Trailer tyres are particularly susceptible to age-related deterioration because trailers often sit stationary for long periods, exposed to UV light and weather. Check the DOT date code and inspect for sidewall cracking before every journey.

Safety Tips for Towing

Pre-Journey Checks

1. Verify weights — weigh the loaded combination at a public weighbridge if possible
2. Check coupling — ensure the hitch is properly engaged, locked, and the breakaway cable is attached
3. Test lights — walk around the combination and verify all lights function
4. Check tyre pressures — on both the vehicle and trailer, including spare wheels
5. Adjust mirrors — ensure you can see clearly past both sides of the trailer
6. Load correctly — heavy items low and ahead of the axle; 60/40 weight distribution

On the Road

• Allow double the normal following distance
• Reduce speed well before bends and junctions
• Use lower gears on descents rather than riding the brakes
• Be aware of crosswinds, especially on bridges and exposed roads
• Check mirrors constantly for trailer sway
• Pull over at rest areas to check the coupling, tyres, and load security

Use our country comparison tool to check towing regulations across all the countries on your route before you travel.

Conclusion

Towing adds complexity to every aspect of driving: licensing, speed limits, equipment, weight management, and driving technique. The rules vary significantly between countries, making thorough preparation essential for any cross-border towing trip.

Key takeaways: check your licence entitlements, know the weight limits for your combination, respect the lower speed limits, carry all required equipment, and verify your towing regulations for every country you will pass through. The investment of time in preparation pays dividends in safety and peace of mind on the road.

For comprehensive driving regulations including towing rules, visit our country guides and tyre law pages.