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According to the Alaska DOT&PF:
- The Alaska Traffic Manual Supplement (ATMS) does not modify the Manual on Uniform Traffic Control Devices (MUTCD) standard statement regarding traffic control devices in the public domain and restriction from protecting those devices by patent or copyright. Accordingly the MUTCD standard applies in this case and all devices contained in either or both the MUTCD and ATMS are in the public domain and shall not be protected by patent or copyright, except for the Interstate Shield.