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[画像:Public domain] This file is in the public domain because it is prescribed by the Tennessee Supplement to the Manual on Uniform Traffic Control Devices , sign number T-S-8. The Tennessee Supplement states on page 1 that "The current edition of the United States Department of Transportation, Federal Highway Administration, Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD), 2009 Edition, is hereby adopted", in the legislation as of July 2012. The federal MUTCD states specifically on page I-1 that:

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.

No provisions of the supplement supersede this provision of the MUTCD.