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.
Limited-access road
Singaporean expressways are used to get to one urban place to another. The longest is the Pan Island Expressway, which covers the width of Singapore. It is 42 kilometres long. Since 2009, even more expressways are being constructed. One of the newest is the Kallang-Paya Lebar Expressway which is 2 kilometres on ground level and 10 kilometres underground. That makes it the longest tunnel expressway in Southeast Asia. On ground level or on flyovers and viaducts, speed limits is 70 km/h to 90 km/h but in tunnels, the speed limit is 70 km/h or 80 km/h.