Irish Driver Theory Practice Test

A trailer must have brakes fitted if it has a gross vehicle weight exceeding 750 kg. This regulation is established to ensure safety on the road, as heavier trailers have a greater potential to cause accidents due to their momentum and the challenges they pose in terms of stopping distance. When a trailer exceeds this weight limit, the risks associated with towing increase significantly. Having brakes on a heavier trailer helps the towing vehicle maintain control and stability, particularly during emergencies or difficult driving conditions.

For lighter trailers, specifically those below this weight threshold, the impact on road safety is typically considered manageable without them, hence the regulations do not mandate braking systems for such trailers. Ensuring that trailers over this limit are equipped with adequate braking systems is crucial for the safety of both the driver and other road users.