advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware black care careful cars caution communicating communication information informing lookout potential-vehicle-damage risk risks road road-surface safety sign signs slow-down speed speed-bump speed-hump vehicles warning warning-sign watch watch-out yellow concern crossing danger dangerous double-lines island observant pedestrians reflective refuge risky road-sign security share sharing small-traffic-island traffic traffic-flow traffic-island walk walkers walking 3D abstract arrow bad choice decision direction failure Good Rendered split success white directing directional directive Dirt dirty old railway-sign red stop warning-lights weathered directions football forbidden forest rules path pictogram playing roadsign soccer sports denied not allowed not-permitted parking permission denied prohibited prohibition purple street-sign verge down forward left mandatory plate right srtraight street transport UP way blank blue clear copyspave empty message nothing one pole post single sky solitary square