"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".

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".