alert appropriate-behavior appropriate-behaviour care caution cautious communication concern danger dangerous denied direction inform information informing message not-allowed not-permitted permission-denied please polite prohibited prohibition prohibitions protect protection rectangle rectangular rules safety sign signage signs text warning warning-sign white words advice animal-crossing animal-priority animals announcement be-careful beware careful communicating crossing directions distance lookout mammal not=too-close observant observe otter otters restricted restriction restrictions security watch watch-out wildlife