What do all those coloured lines and squiggles mean anyway?
When there are roadworks in place, have you ever wondered what all the different coloured lines sprayed on the pavement/road mean? While there is no written standard, the lines are an agreed convention used by utility companies and contractors.
The national colour coding system for underground utilities works are;
Red – Electric power lines, conduit and cables.
Orange – Telecommunication, alarm or signal lines.
Yellow – Gas, oil, steam, petroleum, or other flammable material.
Green – Sewage and drain lines.
Blue – Drinking water.
Purple – Reclaimed water, irrigation, and slurry lines.
Pink – Temporary survey markings, unknown/unidentified facilities.
White – Proposed excavation limits or route/contractor/local authority