English: A U.S. highway shield as used in Florida prior to 1993. Colors used conform to the FHWA-recommended colors given at http://www.triskele.com/roadgeek-fonts/font-faq. Colors on shields for special routes were reversed with respect to the mainline route. Note that Florida's colorized U.S. highway shields are generally square regardless of the number of digits in the route number.
Any traffic control device design or application provision contained in this Manual shall be considered to be in the public domain. Traffic control devices contained in this Manual shall not be protected by a patent, trademark, or copyright, except for the Interstate Shield and any other items owned by FHWA.
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