access-limited advice advising alert allocated allocation approved authorised authorized automobiles behave black boom-gate 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 red restricted restriction restrictions safety sign unauthorised unauthorized vehicles warning white board do don't dry erase forget instruction memory not pen prompt reminder text whiteboard writing access denied no access no further not beyond this point private public stop here appropriate-behavior appropriate-behaviour blue care cars caution danger dangerous law legal no-standing penalties refusal risk risks risky road road-safety road-side signs sky unacceptable verge warning-sign bloom blooming flower flowers forget-me-not garden gardening green nature plant plants season seasons spring tulip tulips access-denied apology avoid behavior behaviour beware concern construction construction-site inconvenience inconvenient yellow clearway directions keep-clear no-parking no-temporary-parking parking asphalt barrel build building bulldozer caterpillar dig digger excavator lay machines ready roller steam track work announcement be-careful communicating deep health polluted pollution protect protection rules toxic toxicity unhealthy water water-pollution water-toxicity weathered