When you're towing a trailer, it's not just your vehicle's performance that changes—your responsibilities as a driver increase too. One of the most common questions from new and experienced drivers alike is: What’s the speed limit for a car towing a trailer on a motorway? It might seem like a simple answer, but there are important rules and safety guidelines you need to follow.
In this post, we’ll explore the legal speed limits for towing, why they’re set lower, and what else you need to know to stay safe (and legal) while driving with a trailer.
The Legal Speed Limit for Towing a Trailer
In many countries—including the UK and across most of Europe—the maximum speed limit for a car towing a trailer on a motorway is 60 mph (96 km/h). This is 10 mph less than the usual 70 mph (113 km/h) limit for cars not towing anything.
This lower speed limit is not optional. It’s a legal requirement designed to keep roads safer for everyone—especially since trailers can significantly affect braking distance, vehicle stability, and overall handling.
Why Is the Speed Limit Lower for Towing?
Towing a trailer changes the dynamics of your vehicle in several important ways:
Increased stopping distance: The extra weight from the trailer means it takes longer for your vehicle to come to a complete stop.
Reduced maneuverability: Whether it's turning, changing lanes, or merging, every movement becomes slower and requires more space.
Higher risk of sway or jackknifing: At high speeds, trailers are more likely to sway, especially in windy conditions or during sudden maneuvers.
Strain on brakes and tires: More weight and momentum mean more wear on essential vehicle parts.
By lowering the speed limit to 60 mph, the law helps mitigate these risks and makes towing safer for both you and other road users.
Where Can You Tow a Trailer?
Besides speed limits, there are some additional rules about where you can tow a trailer. For example:
You cannot use the right-hand lane of a three-lane motorway when towing a trailer (unless directed by signs or in specific circumstances).
Trailers must be roadworthy and properly secured, including having the correct lights and number plate.
Your driving license must cover towing, especially if the trailer is heavier or you're towing professionally.
What About Other Roads?
On single carriageways, the speed limit for a car towing a trailer is usually 50 mph (80 km/h)—again, lower than the 60 mph limit for regular vehicles.
This lower limit applies whether you're using a caravan, utility trailer, or even towing a boat. Always check local regulations as some roads may have different or reduced limits.
Tips for Safe Towing on the Motorway
Plan your route: Avoid tight turns, small roads, or steep inclines when possible.
Balance your load: Make sure your trailer is evenly packed to avoid sway or instability.
Keep a safe distance: Increase the space between you and the vehicle ahead to account for longer stopping times.
Perform regular checks: Check tire pressure, brakes, and hitch connections before every trip.
Use towing mirrors: These help you maintain visibility and are a legal requirement in many areas.
Conclusion
Towing a trailer comes with added responsibility—and one of the most important rules to remember is the speed limit. On a motorway, that limit is 60 mph, not the usual 70 mph. This is enforced for safety reasons and applies to all types of trailers, including caravans, boats, and cargo units.
Following the speed limit when towing isn't just about obeying the law—it's about protecting yourself, your passengers, and everyone else on the road. Drive smart, tow safely, and always stay informed.
FAQs About Towing a Trailer on a Motorway
1. What is the maximum speed limit for towing a trailer on a motorway?
The maximum speed limit for a car towing a trailer on a motorway is 60 mph (96 km/h). This is lower than the standard limit to improve safety and control.
2. Can I drive in the right-hand lane of a motorway while towing a trailer?
No, vehicles towing trailers are not allowed in the right-hand lane of a three-lane motorway, except in certain circumstances like when signs instruct otherwise or if lanes are closed.
3. Do I need a special license to tow a trailer?
It depends on your driving license and the trailer’s weight. In many cases, if you passed your driving test after a certain date, you may need to take an additional test to tow heavier trailers legally.
4. Are towing mirrors required?
Yes. If your trailer or caravan obstructs your rear view, you're legally required to use towing mirrors to maintain proper visibility and road awareness.
5. How can I reduce trailer sway while towing?
To minimize trailer sway, distribute the weight evenly, keep your speed moderate, avoid sudden steering movements, and use anti-sway devices if necessary.
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