HGVs with aerodynamic rear devices now allowed on roads

New regulations coming into effect today will allow haulage companies to choose vehicles with elongated cabs and aerodynamic features fitted on the back, which help reduce fuel consumption.

A 2013 study estimated that these aerodynamic improvements to HGVs could result in fuel savings of 7% to 15%.

The design of elongated cabs also improves driver vision, boosting safety for other road users. The extra space means more comfort for the driver, such as by facilitating a larger bed in sleeper cabs.

Aerodynamic rear devices are flaps that are fitted on the back of trailers to reduce the vehicle’s aerodynamic drag without using up load space. They were previously not permitted for use on Great Britain’s roads under regulations that have been in place since 1986.

The Department for Transport has published good practice guidance on the use of aerodynamic rear devices on HGVs in urban and rural areas.

This follows separate legislation last year to allow greener, longer goods vehicles to be rolled out as the government responded to its consultation on longer-semi trailers reducing mileage, congestion and carbon emissions.