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Many state highway markers are designed to suggest the geographic shape of the state or some other state symbol such as its flag. Most of the others are generically rectangular or some other neutral shape. The default design for state highway markers is the circular highway shield, which is how state highways are indicated on most maps and atlases.
Example of an original U.S. Route shield, with the state name of "Michigan" and route number of "27" displayed in the original block font. The original design of the shield was presented in the January 1927 edition of the Manual and Specifications for the Manufacture, Display, and Erection of U.S. Standard Road Markers and Signs, the precursor to the Manual on Uniform Traffic Control Devices ...
Every state but California uses a square or rectangular sign for its state highways, mainly to save money on both custom cutting and to be contained on a rectangular sign with other route markers. Wisconsin's symbol is a nod to its former triangular shields, while utilizing a second rectangular outline to better fit a number at full-height ...
[citation needed] The reverse happened with U.S. Route 57, originally a Texas state highway numbered to match Mexican Federal Highway 57. [9] In the 1950s, the numbering grid for the new Interstate Highway System was established as intentionally opposite from the US grid insofar as the direction the route numbers increase.
11th edition of the MUTCD, published December 2023. In the United States, road signs are, for the most part, standardized by federal regulations, most notably in the Manual on Uniform Traffic Control Devices (MUTCD) and its companion volume the Standard Highway Signs (SHS).
Since the policy on numbering and designating US Highways was updated in 1991, AASHTO has been in the process of eliminating all intrastate U.S. Highways under 300 miles (480 km) in length, "as rapidly as the State Highway Department and the Standing Committee on Highways of the American Association of State Highway and Transportation Officials ...
New Zealand state highway marker. New Zealand state highways are national highways – the word "state" in this sense means "government" or "public" (as in state housing and state schools), not a division of a country. New Zealand's state highway system is a nationwide network of roads covering the North Island and the South Island. As of 2006 ...
Highway symbols and markers Every state in the U.S. and province in Canada has different markers for its own highways, but uses standard ones for all federal highways. Many special highways – such as the Queen Elizabeth Way , Trans-Canada Highway , and various auto trails in the U.S. – have used unique signs.