blue sign Father and child pedestrian safety sign traffic sign crossing crossover crosswalk public road street zebra arches bridge cables concrete highway overpass protection railing rails suspension suspension bridge walkway posts rods steel waterway access-denied access-limited advice alert appropriate-behavior appropriate-behaviour ban banned be-careful beware bylaws communicating communication concern danger dangerous denied directions information informing law legal motorbikes-prohibited no-wheels not-allowed not-permitted pedestrian-care pedestrian-safety permission-denied prohibited prohibition prohibitions restricted restriction restrictions risk risks rules signs symbol warning warning-sign watch watch-out announcement bicycles-prohibited parking rollerskates-prohibited skateboards-prohibited cycling-prohibited no-bikes no-cycling