Highway Cables 
Network Control Cable

Traffic Systems Cable

Traffic Systems Loop Detector Feeder Cable

National Motorway Communications System Specifications
Conductor: solid annealed copper conductor
Insulation: PE
Screen: aluminium polymer tape
Sheath: MDPE
Sheath colour: Black
Colour code: 2 core: red & black, 4 core: red opposite to blue, yellow opposite to black

Also available with armour