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Wednesday, 3 October 2023

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Motoring

Towing trailers or caravans with vehicles up to 3.5 tonnes

In this article reference is made to the maximum authorised mass (MAM) of vehicles and trailers. This should be taken to mean the permissible maximum weight, also known as the gross vehicle weight.

Category B: Vehicles up to 3.5 tonnes MAM and with up to eight passenger seats

Category B vehicles may be coupled with a trailer up to 750kgs MAM (allowing a combined weight up to 4.25 tonnes MAM) or a trailer over 750kgs MAM provided the MAM of the trailer does not exceed the unladen weight of the towing vehicle, and the combination does not exceed 3.5 tonnes MAM.

For example:

a vehicle with an unladen weight of 1.25 tonnes and a MAM of 2 tonnes coupled with a trailer with a MAM of 1.25 tonnes could be driven by the holder of a category B entitlement. This is because the MAM of the combination does not exceed 3.5 tonnes and also the MAM of the trailer does not exceed the unladen weight of the drawing vehicle

Whereas

the same vehicle with an unladen weight of 1.25 tonnes and a MAM of 2 tonnes when coupled with a trailer with a MAM of 1.5 tonnes would fall within category B+E. This is because although the combined weight of the vehicle and trailer is within the 3.5 tonnes MAM limit, the MAM of the trailer is more than the unladen weight of the drawing vehicle
Vehicle manufacturers normally recommend a maximum weight of trailer appropriate to their vehicle. Details can usually be found in the vehicle's handbook or obtained from car dealerships. The size of the trailer recommended for an average family car with an unladen weight of around 1 tonne would be well within the new category B threshold.

Towing caravans

As for towing caravans, existing general guidance recommends that the laden weight of the caravan does not exceed 85 per cent of the unladen weight of the car. In the majority of cases, caravans and small trailers towed by cars should be within the new category B threshold.

An exemption from the driver licensing trailer limit allows a category B licence holder to tow a broken down vehicle from a position where it would otherwise cause danger or obstruction to other road users.

By passing a category B test national categories F (tractor), K (pedestrian controlled vehicle) and P (moped) continue to be added automatically.

Category B+E: Vehicles up to 3.5 tonnes MAM towing trailers over 750kgs MAM

Category B+E allows vehicles up to 3.5 tonnes MAM to be combined with trailers in excess of 750kgs MAM. In order to gain this entitlement new category B licence holders have to pass a further practical test for category B+E. There is no category B+E theory test. For driver licensing purposes there are no vehicle/trailer weight ratio limits for category B+E.