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Is it patented? |
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Under the MUTCD (Manual on Uniform Traffic Control Devices, 2003 Edition Rev.1 & 2), "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." Click on this link http://mutcd.fhwa.dot.gov/pdfs/2003r1r2/pdf_index.htm to go to the MUTCD website, to read the full introduction or to print this section.
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