5-1-1, initially designated for road weather information, is a transportation and traffic information telephone
hotline in some regions of the
United States and Canada. Travelers can dial the three-digit
telephone number 5-1-1 on traditional
landline telephones and most mobile phones. It is an
N11 code of the
North American Numbering Plan that are used for special services. The number code has also extended to be the default name of many state/provincial transportation department road conditions websites, such as Wisconsin's site.