Occasionally, trailer manufacturers get it wrong, it seems, when it comes to setting up a load-sensing air-brake system, with instances of new trailers – less than a year or even six months old – ...

In Thetford, Norfolk, JM Ayres and Sons hires-in a system for a week each year so that customers can have their trailers checked and tested, while John Day Engineering, near Hungerford, Berkshire, ...