Highway
Major highways are often named and numbered by the governments that typically develop and maintain them. Australia's Highway 1 is the longest national highway in the world at over and runs almost the entire way around the continent. China has the world's largest network of highways followed closely by the United States of America. Some highways, like the Pan-American Highway or the European routes, span multiple countries. Some major highway routes include ferry services, such as U.S. Route 10, which crosses Lake Michigan.
400-series highways
The MTO plans and finances the construction and maintenance of the King's Highway system, which includes the 400-series network.
The system includes of freeways. Highway 401 is the longest freeway at , in addition to being the widest and busiest road in Canada. Highway 420 is the shortest of the routes at .