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 access-limited advice advising allocated allocation arrow authorised authorized automobiles behave black blue communicate communication denied directive emergency emergency-vehicles entry-denied entry-prohibited information informing limited limited-access no-access no-entry not-allowed not-permitted permission-denied prohibited prohibition restricted restriction restrictions vehicles aid assistance availability care casualties casualty-care cross directions emergency-care fatality-reduction first-aid first-aid-procedures harm-reduction help helpful immediate-assistance initial-treatment injuries injury international-symbols life-preservation life-saving location medical-attention minimising-pain one-time-treatment prepared protection providing-emergency-help readiness ready recovery red-cross rescue safety-response short-term-treatment signs symbols text treatment white-on-green-cross wording access-denied appropriate-behavior appropriate-behaviour authorised-approval authorized-approval behavior behaviour exception keep-out limitations staff staff-approval staff-approved unauthorised unauthorized no-admission no-admittance red. restricted along Australia bare below conditions development empty empty of traffic highways lamp-posts landscape left-hand driving lined lines looking down main road no motor cars no motor vehicles no vehicles road rules roadwork stopped suburban suburbs traffic flow traffic lanes wide wide road