access denied denied fines no parking no verge parking not allowed not permitted penalties permission denied prohibited prohibition sign verge warning access-denied no-parking not-allowed not-permitted parking permission-denied please polite red refusal request signs unacceptable white black circle communicating communication directing direction directional directive informing reflective road sign street sign traffic traffic flow no right turn advice alert appropriate-behavior appropriate-behaviour care cars caution communicate information law legal no-standing park restricted restriction restrictions risk risks risky road road-safety road-side safety sky vehicles warning-sign