The Carriageway Loop Box has been specifically designed to give roadside access to carriageway loop cables. It is manufactured from Ductile Iron to BS2789.

It is designed to be installed in the carriageway adjacent to or offset from the kerb edge. Loop cables are slot cut into the loop box via four access slots. The loop cables are fed through the box and into a 50mm or 100mm duct, which is positively connected to a spigoted base. The cables are then fed under the kerb and into a footway access chamber via the connecting duct. The Carriageway loop box offers many advantages to both designers and contractors.