The trucks have noise-reduction features which keep them quiet during night-time resurfacing work and have earned them an exemption from restrictions on lorries in London in the evening and weekends.

The new tippers feature a fully insulated body with additional internal body liners which provide greatly improved noise reduction over traditional alternatives, particularly when the tipper is empty.

Body locks have been incorporated to further reduce the noise caused by bouncing and rattling during transit while the lorry is empty. A rubber sealed split tailboard has also been incorporated to reduce noise during the delivery of materials.

Gloria Elliott of the Noise Abatement Society said: “FM Conway has shown that it is possible to significantly reduce the noise of heavy plant and machinery to minimise disturbance to the public.

“The large investment that this company has made into these noise mitigating and safety measures, with an emphasis on driver training, is a great example to the rest of the industry. The NAS commends the high standards being set by FM Conway.”

Peter Parle, Transport Manager for FM Conway, said: “With these changes to our fleet we can now meet the needs of resurfacing London’s roads at night with the safest and quietest vehicles in the industry.

“Thanks to our noise reduction initiatives, FM Conway has already received special dispensations from London Lorry Control for several schemes.”