Woundered if anyone knew what the purple tube was used for that’s running for miles up the Middle of the m5 barrier around the middle ands area ? Thanks
Orange/Black is power i.e street lighting, purple is data/comms (or power in Scotland), green is fibre-optics/TV (in urban areas anyway), grey/white is usually BT, blue is water, yellow is gas, anything metal is usually gas
Santa:
Orange/Black is power i.e street lighting, purple is data/comms (or power in Scotland), green is fibre-optics/TV (in urban areas anyway), grey/white is usually BT, blue is water, yellow is gas, anything metal is usually gas
Nice one, thanks Santa !
there would be more metal water pipes then gas now 
They are the cables for the gantries.
White is usually Cable and Wireless/Mercury, now been bought up by Vodafone
mucker85:
They are the cables for the gantries.
correct, only untill all the buried cables at side of road are connected then the purple tube will be removed as it the same on the m1
Most of it is made by Naylor Industries in Barnsley.