Do You Need a Special Licence to Tow a Trailer?
In the United Kingdom, whether you need a specific trailer licence or entitlement depends on when you obtained your standard driving licence and the weight of the trailer you intend to tow. Most drivers who passed their car driving test before 1 January 1997 automatically have 'Category B+E' entitlement, allowing them to tow heavier trailers. However, for those who passed on or after this date, the rules are more restrictive, often requiring an additional test.
- Licence rules depend on test date and trailer weight.
- Most pre-1997 drivers can tow heavier trailers.
- Post-1997 drivers have stricter towing limits without further tests.
- Understanding Gross Train Weight is key.
- Additional tests may be required for heavier towing.
The primary legislation governing towing is focused on the Maximum Authorised Mass (MAM), also known as the Gross Vehicle Weight (GVW) or Gross Train Weight (GTW). This is the maximum weight a vehicle can be, including the load it's carrying. For towing, the MAM of the trailer itself and the combined MAM of the vehicle and trailer are critical. Navigating these weight limits and licence categories can seem complex, but with a clear understanding, you can ensure you're always compliant on the road.
This guide will break down the requirements by licence issue date and weight, providing the clarity needed to tow safely and legally.
Licence Entitlement Based on Test Date
The date you passed your driving test is the most significant factor in determining your towing entitlement under the standard 'Category B' licence. This distinction was introduced to grandfather in existing towing rights for experienced drivers.
Passed Your Car Test Before 1 January 1997
If you passed your car test (Category B) before 1 January 1997, you generally have a broader entitlement. You are typically allowed to tow trailers up to 3,500kg MAM when towing with a vehicle that is not a car, such as a van. For towing with a car, the standard Category B entitlement generally covers towing a trailer where the combined MAM of the vehicle and trailer does not exceed 8,250kg, and the trailer's MAM does not exceed 3,500kg. This means you can usually tow most standard car trailers, small caravans, and smaller horseboxes without needing an additional test or special licence category, provided the trailer weight and combined weight limits are observed.
Passed Your Car Test On or After 1 January 1997
For drivers who passed their car test on or after 1 January 1997, the standard Category B licence has more restricted towing capabilities. You can tow a trailer provided that:
- The trailer's MAM does not exceed 750kg.
- The trailer's MAM exceeds 750kg, but the combined MAM of the towing vehicle and the trailer does not exceed 3,500kg.
In simple terms, if you passed your test after this date, you can tow a small trailer (like a standard lightweight car trailer or a very small camping trailer) with a vehicle up to 3,500kg combined weight. If the trailer is heavier than 750kg, you must ensure the combined weight does not go over 3,500kg. For example, if your car weighs 2,000kg, you could tow a trailer weighing up to 1,500kg (2,000kg + 1,500kg = 3,500kg). Many modern cars, especially larger SUVs or those designed for towing, may exceed this combined limit when paired with a moderately sized caravan or horsebox. If you need to tow heavier loads or larger trailers, you will need to pass an additional test to gain Category B+E entitlement.
The most crucial takeaway for post-1997 drivers is the 3,500kg combined MAM limit.
Understanding Trailer Weight Limits (MAM)
The 'Maximum Authorised Mass' (MAM) is a critical figure for understanding trailer licence requirements. It represents the maximum weight your trailer (or towing vehicle) is legally allowed to be, including its load. This figure is usually found on a plate attached to the trailer, often near the hitch or on the chassis.
What MAM Means for Towing
For towing purposes, there are generally three weights to consider: the MAM of the towing vehicle, the MAM of the trailer, and the Gross Train Weight (GTW). The GTW is the maximum total weight of the towing vehicle and trailer when combined. It's essential to check the GTW for your specific towing vehicle, which is usually found in the vehicle's handbook or on a plate on the vehicle itself (often in the door frame or under the bonnet).
Key Weight Terms to Know:
- MAM (Maximum Authorised Mass) / GVW (Gross Vehicle Weight): The maximum total weight of a vehicle or trailer when loaded.
- GTW (Gross Train Weight): The maximum total weight of the towing vehicle and trailer combined. You must not exceed this.
- Towing Limit: The maximum weight the towing vehicle is rated to tow, usually found in the vehicle's manual. This can be less than the trailer's MAM or the combined GTW.
- Nose Weight: The maximum vertical load the trailer's hitch can put on the towing vehicle's tow ball. This is crucial for stability.
Accurately determining these weights is vital. If the trailer's MAM exceeds 750kg and you passed your test after 1 January 1997, you must ensure the combined weight of your vehicle and trailer (GTW) does not exceed 3,500kg. If you need to tow a trailer with a MAM over 750kg and your vehicle plus trailer will exceed 3,500kg GTW, you will need the B+E entitlement.
If you are unsure about the MAM of your trailer or the towing capacity of your vehicle, consult the manufacturer's documentation or look for the plates on the vehicle and trailer.
Always check the towing capacity specified by your vehicle manufacturer, as this might be lower than the legal limit allowed by your licence category.
When is a B+E Licence (Trailer Test) Required?
If your standard Category B licence (passed after 1 January 1997) does not permit you to tow the combination of vehicle and trailer you require, you will need to pass a further test to gain Category B+E entitlement. This is commonly referred to as a 'trailer test'.
Scenarios Requiring a B+E Licence
A B+E licence is generally needed when:
- You passed your car test on or after 1 January 1997.
- You want to tow a trailer with a MAM of over 750kg.
- The combined MAM of your vehicle and trailer exceeds 3,500kg.
For instance, towing a twin-axle caravan, a large car trailer carrying a vehicle, or a substantial horsebox typically falls into this category. Many modern family cars coupled with larger trailers will push past the 3,500kg GTW limit, necessitating the B+E licence.
What the B+E Test Involves
The B+E test assesses your ability to safely control a vehicle and trailer combination. It typically consists of two parts:
- Off-road manoeuvring: This part tests your ability to carry out specific manoeuvres with the trailer. These can include uncoupling and re-coupling the trailer, and a reversing exercise, often involving reversing into a bay or alongside a line of cones.
- On-road driving: This assesses your general driving ability, including how you handle the vehicle and trailer in real traffic conditions. It will cover road awareness, observation, control, and safe interaction with other road users.
You must have a full Category B licence before you can take the B+E test. Preparation is key, and many people opt for professional training courses to ensure they are familiar with the test requirements and can drive the vehicle and trailer combination confidently.
Passing the B+E test adds the 'E' to your licence, authorising you to tow heavier combinations up to 7,000kg MAM (3,500kg vehicle + 3,500kg trailer).
Towing Caravans and Horseboxes
Towing a caravan or horsebox involves specific considerations beyond just the trailer licence. These loads often have significant weight and unique handling characteristics, making compliance with weight limits and having the correct licence crucial.
Caravan Towing Licence Requirements
As discussed, the primary determinant for towing a caravan is the MAM of the caravan and the combined weight of the car and caravan. If you passed your test before 1 January 1997, you likely have B+E entitlement and can tow most caravans. If you passed on or after 1 January 1997, you can tow a caravan up to 750kg MAM. If the caravan's MAM is over 750kg, the combined MAM of your car and caravan must not exceed 3,500kg. Exceeding this combined weight, or towing a caravan with a MAM over 750kg where the combined weight is over 3,500kg, requires a B+E licence.
It's also essential to consider the caravan's 'nose weight' – the maximum downward force it can exert on the tow ball. This must not be exceeded, as it affects vehicle stability. Always check your car's towing limit and the caravan's nose weight limit, and ensure the caravan's load distribution is balanced for safe towing.
Horsebox Towing Licence and Vehicle Considerations
Towing horseboxes presents unique challenges due to their size, weight, and the presence of live animals. The MAM of most horseboxes is significantly higher than standard car trailers, often exceeding 3,500kg for larger models. Consequently, most individuals towing horseboxes will require Category B+E entitlement. Even if the horsebox's MAM is below 3,500kg, if the combined weight with the towing vehicle exceeds 3,500kg and you passed your test after 1997, the B+E licence is necessary.
Beyond the licence, the towing vehicle needs to be suitable. It must have a sufficient towing capacity (GTW) to handle the horsebox and its load, often requiring a larger SUV or a specific towing vehicle. Factors like torque, braking capability, and suspension are vital. Ensure the horsebox is legally plated with its MAM and that the towing vehicle's GTW and towing limit are not exceeded.
When towing caravans or horseboxes, always verify the MAM of the trailer and your vehicle's GTW and towing limit.
Towing a Car Trailer (e.g., for DIY or Business)
Using a car trailer for DIY projects, moving goods, or commercial purposes follows the same licensing rules as towing other types of trailers, but the practical application often involves heavier loads or frequent use, making licence compliance particularly important.
Licence Requirements for Car Trailers
The core rules for towing a car trailer remain consistent: the MAM of the trailer and the combined MAM of the vehicle and trailer are key. If the car trailer's MAM is 750kg or less, no additional licence is required beyond your standard Category B, regardless of your test date, provided your vehicle is capable of towing it.
However, if the car trailer's MAM exceeds 750kg:
- Pre-1997 Licence Holders: Can typically tow car trailers up to 3,500kg MAM without an additional test.
- Post-1997 Licence Holders: Can tow a car trailer over 750kg MAM only if the combined MAM of the car and trailer does not exceed 3,500kg. If the combined weight exceeds 3,500kg, a B+E licence is required.
For example, if you're using a large trailer to transport garden waste or DIY materials, its MAM might be around 1,500kg. If your car weighs 2,000kg, the combined weight is 3,500kg. If you passed your test after 1997, this is the maximum you can tow. If your car and trailer combination exceeds this, you'll need the B+E entitlement.
Practical Considerations for Car Trailer Use
Beyond the licence, ensuring the trailer is roadworthy is paramount. This includes checking:
- Tyre Pressure: Correctly inflated tyres are essential for safety and handling.
- Lights: All trailer lights (brake, indicator, tail, and number plate lights) must be functional and synchronised with the towing vehicle.
- Number Plate: The trailer must display the same registration number as the towing vehicle.
- Load Security: Ensure any cargo is safely secured to prevent shifting during transit.
- Braking System: If the trailer has its own braking system, it must be correctly adjusted and functional.
When choosing a trailer, consider its intended use and ensure its MAM is appropriate for the loads you'll carry. Overloading a trailer is dangerous and illegal, and can strain both the trailer and the towing vehicle, potentially leading to accidents. Always consult the vehicle handbook for its specific towing limits.
Use a caravan nose weight gauge to ensure the load is correctly balanced on the trailer hitch for optimal stability.
Speed Limits When Towing in the UK
Towing a trailer, caravan, or horsebox often means adhering to different speed limits than driving a standard car. These adjusted limits are in place to account for the increased length, weight, and handling characteristics of the combined vehicle and trailer.
General Speed Limits for Towing Vehicles
The general rule is that when towing a trailer, the speed limits are reduced on single and dual carriageways, and motorways. On built-up roads (roads with a speed limit of 50mph or less), the speed limit remains the same as for a car. However, on roads where the speed limit is higher than 50mph, the reduced limit applies.
Here are the standard speed limits when towing a trailer in the UK:
- Motorways: 60mph
- Dual Carriageways: 60mph
- Single Carriageways: 50mph
- Built-up Areas (generally 30mph or 40mph): The same as for cars (e.g., 30mph).
It is crucial to be aware of these limits and obey them. Exceeding them can result in penalties, and more importantly, it significantly increases the risk of an accident, especially given the reduced manoeuvrability and longer stopping distances associated with towing.
Towing a Caravan on a Dual Carriageway
Specifically for towing a caravan on a dual carriageway, the speed limit is 60mph. This applies irrespective of whether the caravan has its own braking system or how heavy it is, provided you are legally entitled to tow it with your licence and vehicle. The same 60mph limit applies on motorways. For single carriageways, the limit drops to 50mph.
The key is to drive at a speed that is safe for the conditions, your vehicle, and the trailer. Factors like wind, road surface, and traffic density should influence your chosen speed, even if you are within the legal maximum.
Always anticipate slower braking distances and wider turns when towing.
Ensuring Your Trailer Has a Number Plate
A legally compliant trailer must have its own functioning rear light board and, crucially, a correctly displayed number plate. This ensures law enforcement can identify the vehicle and trailer combination. Not having a visible and correct number plate on your trailer is an offence.
The Trailer Number Plate Rule
The law requires that any trailer being towed on public roads must display a rear registration number plate that is identical to the one on the rear of the towing vehicle. This plate must be clearly visible and illuminated at night or in poor visibility conditions by the trailer's own lighting system.
Key requirements for a trailer number plate:
- It must match the registration number of the towing vehicle exactly.
- It must be mounted securely on the rear of the trailer.
- It must be illuminated by the trailer's rear lights.
- It must be kept clean and legible.
Many trailers are sold with a pre-fitted number plate holder and wiring for lights, making it straightforward to connect the trailer's lighting system to the car's towing electrics. If your trailer does not have a dedicated number plate light, you may need to ensure the trailer's overall lighting is sufficient to illuminate the plate.
Where to Get a Trailer Number Plate
You can obtain an identical number plate for your trailer from various registered number plate suppliers. When ordering, you will need to provide proof of your vehicle's registration number (e.g., V5C logbook) and your identity. These suppliers will ensure the plate is manufactured to the correct specifications. It is advisable to purchase a plate made from durable materials that can withstand the elements.
Many caravan and trailer centres or automotive accessory shops offer this service. You can also find many online suppliers who can post the plate to you. For a trailer number plate, you typically don't need the official V5C document for the trailer itself, as it's tied to the towing vehicle's registration. However, checking with the specific supplier is always recommended.
Failing to display the correct number plate on your trailer can lead to a fixed penalty notice or even prosecution.
Frequently Asked Questions About Trailer Licences
Navigating the regulations around trailer licences can bring up many specific questions. Here we address some of the most common queries to provide further clarity on towing requirements in the UK.
Do you need a trailer licence?
Yes, you may need a specific trailer licence (or entitlement on your existing licence) depending on when you passed your test and the weight of the trailer you intend to tow. Standard Category B licences allow towing lighter trailers, but heavier combinations often require a B+E entitlement, usually obtained by passing an additional test.
Can I tow a trailer on a standard UK driving licence?
You can tow a trailer on a standard UK Category B licence if the trailer's MAM is 750kg or less, or if it's heavier but the combined MAM of your vehicle and trailer does not exceed 3,500kg, provided you passed your test on or after 1 January 1997. Those who passed before 1997 have broader entitlements.
What happens if I tow without the correct licence?
Towing a trailer without the correct licence entitlement is a serious offence. You could face prosecution, a significant fine, penalty points on your licence, and your insurance may be invalidated, leaving you personally liable for any damages or injuries in the event of an accident.
How much weight can I tow with a trailer?
The weight you can tow depends on your licence category and your vehicle's towing capacity. With a standard Category B licence (post-1997), the combined MAM of vehicle and trailer is capped at 3,500kg. With a B+E licence, you can typically tow a trailer up to 3,500kg MAM with a vehicle capable of towing that weight.
Do I need to do a trailer test for a small car trailer?
If the small car trailer has a Maximum Authorised Mass (MAM) of 750kg or less, you generally do not need a separate trailer test, regardless of when you passed your car test, provided your vehicle can tow it. For trailers over 750kg, the rules regarding combined weight and test requirements apply.
When can I tow a trailer heavier than 750kg?
If you passed your car test before 1 January 1997, you can usually tow a trailer with a MAM over 750kg. If you passed on or after 1 January 1997, you can only tow a trailer over 750kg if the combined MAM of your vehicle and trailer does not exceed 3,500kg. For heavier combinations, a B+E licence is needed.
What is the Gross Train Weight (GTW)?
Gross Train Weight (GTW) is the maximum total weight of the towing vehicle and trailer combined, as specified by the manufacturer. You must not exceed this weight. It's a critical figure that, along with your licence category, dictates what you can legally and safely tow.