set of public road signs in blue color with a capital white letter s, t, u in the center on white background

attention background billboard blue board capital caution center choice city clear color concepts construction copy course crossroad danger decision design detail direction directional dirty drive empty frame grunge guidance guide guidepost hazard highway icon ideas industrial information intersection isolated journey letter limit nobody notice object old plastic pole post public road roadsign safety set shape sign signal space speed stop striped suburb symbol texture town traffic transport travel two urban vehicle vintage wall warning way white worn