Driving in Ireland
Towing a Trailer — Do You Need a BE Licence?
Hitching up a trailer, a plant box or a caravan? Whether your ordinary car licence covers it comes down to weight — and getting it wrong can void your insurance. Here's exactly where the lines fall, plus how to tow safely.
First, Understand MAM
The one figure the whole licence question turns on.
MAM means Maximum Authorised Mass — the most a vehicle or trailer is permitted to weigh, fully loaded. It's not what your trailer weighs empty, and it's not what you happen to put in it today — it's the legal maximum stamped for that trailer. Whether you need a BE licence depends on the MAM of the trailer and the combined MAM of car-plus-trailer.
Check the plate, not your guess. Both your car and your trailer have a manufacturer's plate listing their MAM. Find those figures before you tow anything — eyeballing it is how people end up driving on the wrong licence without realising.
Category B vs Category BE
When your ordinary car licence is enough — and when it isn't.
750kg
Trailer MAM at or below this — category B is always fine
3,500kg
Combined MAM ceiling for category B with a heavier trailer
BE
Needed for heavier trailer/combination above the B limits
| Your situation | Licence needed |
|---|---|
| Trailer MAM 750kg or less | Category B |
| Trailer MAM over 750kg, but combined car + trailer MAM is 3,500kg or less | Category B |
| Trailer over 750kg where the combination exceeds the category B limit | Category BE |
| Larger / heavier vehicles & trailers (commercial) | C1E, CE etc. |
In short: a category B licence covers a light trailer (up to 750kg) always, and a heavier trailer too as long as the combined MAM stays within the category B limit (up to 3,500kg). Above that, you need category BE, which involves a separate driving test. Always confirm your exact entitlement and the current thresholds with the RSA, as licence categories have specific definitions.
Towing on the wrong category is uninsured driving. If you tow a combination your licence doesn't cover, your insurance may not respond in a claim — and you're committing a licensing offence. The few minutes spent checking the plates and your licence categories are well worth it.
The Towing Speed Limit
Lower than the road sign — even on the motorway.
When towing a trailer, the maximum speed is 80 km/h — and this applies even on roads where the posted limit is higher, such as motorways and dual carriageways. The number on the sign is not your limit when you're towing.
Why it matters beyond the law: a trailer changes how a car behaves — longer to stop, more prone to snaking, and far less forgiving at speed. The 80km/h cap isn't just a rule; it's the speed at which a typical car-and-trailer stays stable and controllable.
Trailer Roadworthiness
The trailer is part of your vehicle — it must be legal too.
The trailer must have
- Working lights — brake, indicators, rear and number plate lights
- A number plate matching the towing vehicle
- Sound tyres, a secure coupling and a safety chain/breakaway device as required
- Brakes where the trailer's weight requires them
Before every tow, check
- The coupling is properly latched and locked onto the towball
- The electrics are plugged in and all lights work
- Tyre pressures and condition on both trailer and car
- The load is secure and won't shift
Heavier trailers have extra requirements around braking and testing. If you're towing something substantial regularly — a big plant trailer, a horsebox, a large caravan — confirm the specific rules for that weight class with the RSA.
Loading & Towing Safely
How you load it decides whether it tows like a dream or a nightmare.
1
Load low and over the axle
Put heavy items low down and centred roughly over the trailer's axle. A high or badly placed load makes the trailer unstable.
2
Get the nose weight right
A little more weight toward the front (the towball) keeps the trailer steady. Too much weight at the back invites snaking.
3
Strap everything down
Secure the load so nothing can move, slide or fall. A shifting load mid-journey is dangerous and can pull the car off line.
4
Drive for the trailer
Brake earlier, leave bigger gaps, swing wider on turns, and allow far more room to overtake. If it starts to snake, ease off gently — don't brake hard or steer sharply.
The mindset shift: towing is a different skill, not just driving with extra length. Take your first tow somewhere quiet, practise reversing in an empty space, and build up before tackling busy roads or a long trip.
Towing for the first time — or for work?
Whether you need BE training or just confidence with a trailer behind you, we can help you tow safely, smoothly and within the law. Get in touch about a tailored session.
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