WA-537.svg

Route shield for Washington State Route 537

Public domain This file is in the public domain because it comes from the Washington Modification to the Manual on Uniform Traffic Control Devices , sign number M1-601, which states that "WSDOT adopted the [ Manual on Uniform Traffic Control Devices ] 2009 on November 17, 2011. The MUTCD 2009 and Washington Modification are effective for use in Washington beginning December 19, 2011." The federal MUTCD states specifically on its 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 modifications supersede this provision of the MUTCD in Washington.

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