Traffic warning sign

Sign that warns people for a risk or danger Exhibit mostly of warning signs (with some regulatory signs like Do Not Enter) at the Turin Automobile Museum A warning sign is a type of sign which indicates a potential hazard, obstacle, or condition requiring special attention. Some are traffic signs that indicate hazards on roads that may not be readily apparent to a driver. While warning traffic sign designs vary, they usually take the shape of an equilateral triangle with a white background and thick red border. In the People's Republic of China (excluding Macau and Hong Kong) and North Korea, they appear with a black border and a yellow background. In Sweden, Greece, Finland, Iceland, Poland, Cuba, Nigeria, South Korea and Vietnam, they have a red border with an amber background. The polar bear warning sign in Svalbard recently changed from displaying a black bear on white background to a white bear on black background (both signs are triangular with a red border). Some countries (like France, Norway and Spain) that normally use a white background have adopted an orange or amber background for road work or construction signs. Warning signs in some countries have a diamond shape in