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 
                                                    
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