advice alert announcement appropriate-behavior appropriate-behaviour aware awareness blue color colored colour coloured communicating communication considerate consideration directions Dirt dirty disposal dispose garbage informing lettering letters reduce responsible rubbish rubbish-reduction sign signs unwanted waste waste-disposal waste-reduction wording words colorful colourful ancient drive elevator gear mechanics metal reduction round rusty steel teeth tooth transmission wheel winch abstract background design grunge old rust sky better change climate emissions family green greenhouse house life living natural people pure recycle warming World black care caution crossing pedestrians reflective speed reduction street sign traffic traffic flow warning yellow circular directing direction directional indication indicator roundabout aid assistance availability casualties casualty-care cross danger emergency 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 red-cross rescue safety safety-response short-term-treatment symbols text treatment white-on-green-cross arrows curved give-way triangle triangular white chain saw cherry picker ear muffs extension Harness height looking down lopping men men at work noise reduction Noisy pruning raised platform safety harness tall tall tree tree up high workmen