1) Traffic sign 2) Warning system
Found on
https://www.crosswordclues.com/clue/warning-sign
A traffic warning sign is a type of traffic sign that indicates a hazard ahead on the road that may not be readily apparent to a driver. In most countries, they usually take the shape of an equilateral triangle with a white background and a thick red border. However, both the color of the background and the color and thickness of the border varies...
Found on
http://en.wikipedia.org/wiki/Warning_sign
(from the article `roads and highways`) ...hazards and navigation. They are classified as regulatory signs, which provide notice of traffic laws and regulations (e.g., signs for speed ...
Found on
http://www.britannica.com/eb/a-z/w/10
No exact match found.
