It’s hard to imagine a worksite without them, but high viz vests are a relatively modern invention. From its earliest incarnation on the railways of Glasgow to the early 2000s when every politician appeared to be fronting a camera in one - the high viz vest has come to mean so much more than safety.

Podden och tillhörande omslagsbild på den här sidan tillhör ABC Australia. Innehållet i podden är skapat av ABC Australia och inte av, eller tillsammans med, Poddtoppen.