Underground crossing sign

underground crossing sign, pedestrian crossing, subway, underpass, safety sign, traffic sign, warning, caution, road sign, tunnel, underground passage, footpath, hazard, alert, public safety, crossing area, walking route, signage, street sign, urban safety, directional sign, pedestrian safety, pathway, transit, city sign, caution sign, warning symbol, pedestrian route, underpass safety, urban infrastructure, safety symbol, street safety, traffic warning, underground walkway, travel safety, public path, safety notice, traffic control, caution symbol, underground access, pedestrian guide