Hot tarmac is too soft to walk on for a few hours, and so the bollards and traffic sign are warning people to stay off the pavement, or they will leave footprint depressions on the surface. The sign and bollards were removed shortly after the photo was taken, so that people could use the pavement again.
Relevant image keywords:
advisory, asphalt, bollard, bollards, communication, cone, cul-de-sac, focus on foreground, footpath, hazard sign, highway maintenance, highways maintenance, housing estate, men at work, men at work sign, objects/equipment, orange, orange and white, orange and white bollards, outdoors, pavement, real life, real life situation, resurfaced, resurfacing, road, road maintenance, road works, road works sign, roadside, sidewalk, sign, street, symbol, tarmac, tarmacadam, traffic cone, triangle, triangle sign, urban scene, vertical, warning, warning sign, white, work, work triangle sign
