access-denied advice alert appropriate-behavior appropriate-behaviour avoid black care communicating communication concern damage danger dangerous demolition denied destruction directions fence fencing keep-out mesh message no-access no-entry not-allowed not-permitted permission-denied prohibited prohibition red risk risks risky safety sign unwanted warning warning sign weathered white wire-mesh announcement aware awareness careful caution colors colours considerate consideration Dirt dirty garbage green informing limitations limited listen lookout rubbish signs warning-sign waste waste-disposal watch-out 3-D area attention banned cigarettes direction directive distinctive environment eye-catching glassy health health-risk location no-smoking plastic pollution raised style surface surfaces surfacing symbol tactile texture textured textures thick thin unhealthy wording words be-careful beware cars cautious conditions gravel Look looking observant road-conditions slippage slow slow-down speed speed-reduction traffic vehicles watch yellow communicate dangers drowning-danger information lettering restricted restriction restrictions river riverside signage symbols text water wet color coloration colored colorful colour coloured colourful hiking paths tracks walk walking walking-paths walking-tracks cliff cliffside deterioration fading-sign fall falling light shadows shapes shrubs sunlight trees slippery blue law legal no-standing penalties refusal road road-safety road-side sky unacceptable verge antennae bees brown buzzing community furry hairy hive honey-bees insects movement on-guard pollinators protective soldier-bees striped swarm swarming transparent wings font parallel-signage rectangle reflective speed-hump steel-post traffic-sign triangle word