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.
I, Vishwin60, the creator of this image, hereby release it into the public domain. If that cannot be done for any reason, including the nonexistence of a way to release a work into the public domain, I release it (or my changes in the case of a derivative work) under the following licenses:
Copyleft: this work of art is free, you can redistribute it and/or modify it according to terms of the Free Art License. You will find a specimen of this license on the site Copyleft Attitude http://artlibre.org/licence/lal/en/ as well as on other sites.
The copyright holder of this image allows anyone to use it for any purpose including unrestricted redistribution, commercial use, and modification.