alert avoid barricade barrier build caution color cone construct construction danger direction drive equipment forbidden highway line marker marking object obstacle orange orientation pavement plastic red reflective repair road roadworks safety security sign signal site speed stop street striped stripes symbol traffic transportation travel under construction urban warning way white work 3-D appropriate-behavior appropriate-behaviour area attention banned cigarettes communicating communication directive distinctive environment eye-catching glassy health health-risk location no-smoking not-allowed not-permitted permission-denied pollution prohibited prohibition raised style surface surfaces surfacing tactile texture textured textures thick thin unhealthy wording words aid assistance availability blanket contained directions emergency fire fire-blanket fire-extinguishing fire-retardant fire-safety-item flame-proof flame-resistant folded heat-minimization help helpful instructions messages non-flammable-blanket oxygen-depriving prepared prevention protection quick-release-contraption readiness ready safety-device smother storage stored tag usage wall wrap wrap-around lettering semi-transparent surfaced angry apocalypse apocalyptic awesome beams beautiful black blowing over blue breaking through bright cloud clouds colors colour colours concepts contrast creation dark darkening disturbing dramatic foreboding frightening glory golden heavenly inspiring light lighting moody natural nature radiant radiating rays shining signs skies sky sky blue spreading storm storm front stormy sun sunlight threatening thunder thunderhead wild flood floods golf course stream water blank man men transit working man chock chocking electric electrical electricity fence grid high power secure sundtech voltage wire care crossing informing pedestrians speed reduction street sign traffic flow yellow