alert appropriate behavior appropriate behaviour black care concern danger dangerous denied directions law legalities not allowed not permitted permission denied prohibited prohibition protect protection red rules safety sign signs warning warning sign white appropriate-behavior appropriate-behaviour black and white children communicating communication denial dog dogs-prohibited informing kids not-allowed not-permitted permission-denied pets playground beach black-and-white canine fine no-dogs penalty seashore unwelcome blue dangers no-diving risk risks risky shallow swimmers swimming water wet vehicle circle directing direction directional directive no parking parking reflective road sign street sign traffic traffic flow verge access denied denying access denying entry forbidden multi-lingual protected restricted restricted area secure security serious stop appreciated area cigarettes environment health health-risk no-smoking pollution symbols thanks unhealthy no right turn