"Often, the majority of symbols cannot be attributed to anything other than utility companies, using the markings to indicate where work is required." Police shared a guide of markings used by ...

With other utilities, the dots in circle symbol can represent the number of cables within a single duct. Even experts like Palmer say some of the markings left on pavements resemble "hieroglyphs".

Secret symbols chalked on the walls of homes ... People have been warned by police to look out for the markings which can also be used by utility firms to inform workers of a problem's whereabouts.

Police forces have previously warned of similar chalk symbols which they thought could be used to mark out homes where ... Letters are also used to refer to the utility companies who own the ...

Sarah Silverman has been slammed on Twitter after mistaking a pair of neon orange construction markings for Nazi swastikas ... out that the innocuous curvy symbols are common in construction ...

With other utilities, the dots in circle symbol can represent the number of cables within a single duct. Even experts like Palmer say some of the markings left on pavements resemble "hieroglyphs".