What do all those coloured lines and squiggles mean anyway?


Lines & Squiggles!

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

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.