Towing a trailer can be incredibly useful, whether you’re moving furniture, going on a camping trip, or hauling equipment for work. But when it comes to hitting the motorway with a trailer in tow, there are legal rules to follow and safety checks you simply can’t ignore. If you’ve ever wondered what’s involved in getting a car towing a trailer on a motorway safely and legally, you’re in the right place.
This ultimate checklist is designed to give you peace of mind and keep your journey smooth, safe, and on the right side of the law.
1. Check the Legal Requirements First
Before you hitch that trailer to your car, make sure you’re legally allowed to tow it. Here’s what to check:
✅ Driver’s License Eligibility
Not all driver’s licenses automatically allow you to tow a trailer. If you’re unsure whether your license qualifies, contact your local DMV or check the back of your license card. Some states have restrictions based on the trailer weight or vehicle type.
✅ Know the Gross Combined Weight Rating (GCWR)
The GCWR is the maximum weight your car and trailer can safely handle together. This includes the car, trailer, cargo, and passengers. You can find your car’s towing limit in the owner’s manual or on the manufacturer’s website.
✅ Trailer Registration and Insurance
Most states require trailers to be registered and sometimes insured. Make sure your trailer has a valid license plate, registration documents, and meets insurance requirements, especially if you’re taking it on the motorway.
2. Make Sure Your Car Is Fit to Tow
Not every car is built to tow a trailer, especially on the motorway where speeds are higher. Consider the following:
✅ Tow Hitch and Equipment
Your vehicle should have a properly installed tow hitch, safety chains, and electrical connectors. The hitch should match the trailer’s weight and class.
✅ Braking System
Some larger trailers are required to have braking systems. Even with smaller trailers, it’s safer and may be legally required depending on your state’s laws.
✅ Check the Tires
Inspect the tires on both your car and trailer. They should be properly inflated and show no signs of cracking, bulging, or excessive wear.
✅ Mirrors for Rear Visibility
If your trailer blocks your rearview, you must use extended side mirrors to maintain full visibility. Safety is key, especially when switching lanes at high speeds.
3. Load the Trailer Safely and Evenly
A car towing a trailer on a motorway needs proper balance to prevent swaying or accidents. Here’s how to load it right:
✅ Distribute the Weight Evenly
Place heavier items over the axle and balance the load from side to side. About 60% of the weight should be in the front half of the trailer.
✅ Secure the Load
Use straps, bungee cords, or cargo nets to prevent shifting during transit. Unsecured loads can cause instability or fall onto the motorway.
✅ Keep Weight Within Limits
Stay under your vehicle’s towing limit and avoid overloading the trailer itself. Excess weight can cause braking issues and damage your car’s suspension.
4. Conduct a Pre-Drive Inspection
Before you set off, spend 10 minutes doing a complete walkaround of your car and trailer.
✅ Check All Lights
Ensure your brake lights, turn signals, and tail lights are working on both the car and trailer. Faulty lights are dangerous and can result in fines.
✅ Test the Brakes
If your trailer has a braking system, test it before hitting high speeds. Confirm that the trailer brakes respond smoothly to your vehicle’s braking.
✅ Inspect the Coupler and Chains
Make sure the trailer hitch is securely attached, and safety chains are crossed under the coupler to catch it in case it disconnects.
5. Know the Rules of the Road
Driving a car towing a trailer on a motorway requires you to follow specific rules.
✅ Speed Limits
Most states enforce lower speed limits for vehicles towing trailers. Stay within the legal speed limit and adjust your speed based on road and weather conditions.
✅ Lane Restrictions
Some highways require towing vehicles to stay in specific lanes—usually the right-hand lanes. Watch for posted signs and stay aware of local rules.
✅ Passing Safely
Give yourself extra time and space when passing. Trailers increase your total length, which means you’ll need more room to safely overtake other vehicles.
6. Drive Smoothly and Stay Alert
Once you’re on the road, the way you drive makes all the difference.
✅ Accelerate Gradually
A trailer adds a lot of weight. Sudden acceleration can strain your engine or cause jackknifing.
✅ Break Early
Your stopping distance is much longer with a trailer. Start braking well ahead of traffic stops, red lights, or unexpected obstacles.
✅ Take Wider Turns
Trailers don’t pivot like cars. Make wide, gradual turns to prevent curbing or swiping obstacles.
7. Be Ready for Emergencies
Even with the best preparation, things can go wrong. Be ready just in case.
✅ Carry an Emergency Kit
Include reflective triangles, a flashlight, tire pressure gauge, spare tire, jack, jumper cables, and basic tools.
✅ Know How to Handle Sway
If the trailer starts to sway, don’t panic. Gently ease off the accelerator and avoid sudden steering movements. Most trailer sway is caused by high winds, speeding, or improper weight distribution.
8. Plan Your Route Ahead of Time
Motorways are built for long-distance travel, but not all exits or rest areas are trailer-friendly.
✅ Use Trailer-Friendly GPS Settings
Some GPS apps allow you to input trailer dimensions so you can avoid narrow roads, low bridges, or steep inclines.
✅ Map Out Fuel and Rest Stops
Pulling over with a trailer isn’t always easy. Choose fuel stations and rest areas with ample space for parking and turning around.
9. Post-Trip Maintenance
Once you’re back home, a little trailer maintenance can go a long way.
✅ Inspect for Wear and Tear
Check the tires, hitch, and electrical connections for any signs of damage. Look for loose bolts or corrosion.
✅ Clean and Store Properly
Remove dirt, grime, and road salt to prevent rust. Store your trailer in a safe, covered location when not in use.
FAQs
1. Can any car tow a trailer on a motorway?
Not every car is designed to tow a trailer, especially at motorway speeds. Always check your vehicle’s towing capacity in the owner’s manual and ensure it has the correct towing equipment installed.
2. What’s the speed limit for a car towing a trailer on a motorway?
The speed limit varies by state, but it’s usually lower than for regular vehicles, typically around 55–65 mph. Always check the posted signs and follow local laws.
3. Do I need special mirrors for towing on the motorway?
Yes, if your trailer blocks your rear view, you’ll need extended side mirrors. These help you see traffic clearly and change lanes safely.
Final Thoughts
Towing a trailer doesn’t have to be stressful. With this checklist in hand, you’ll be fully prepared for every step—before, during, and after your journey. Whether it’s your first time or you’re a seasoned hauler, following these tips ensures your car towing a trailer on a motorway does so safely, legally, and without any last-minute surprises.
