File:M-231.svg

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DescriptionM-231.svg	Vector image of a Michigan state trunk line highway shield
Date	27 November 2006
Source	Sign M1-6 of the Michigan Department of Transportation, Michigan State Police, Federal Highway Administration Manual on Uniform Traffic Control Devices (PDF) (2005 Michigan supplement to 2003 edition ed.), Michigan Department of Transportation, p. 2D−5
Author	Michigan Department of Transportation
Permission (Reusing this file)	Page I-1 states: "Any traffic control device design or application provision contained in this Manual shall be considered to be in the public domain."

This file is in the public domain because it comes from the Michigan Manual on Uniform Traffic Control Devices, sign number M1-6, which states specifically in its introduction, 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 items owned by FHWA.

File history

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	Date/Time	Dimensions	User	Comment
current	21:19, 2 September 2018	600 × 600 (3 KB)	HWY Shield Bot	== {{int:filedesc}} == {{Information \|Description={{en\|1=M-231 highway marker}} \|Source=File:M-template.svg \|Date={{subst:VI-time}} \|Author=Michigan Department of Transportation<br />Template: Fredddie<br />File created & uploaded by {{user\|HWY Shield Bot}} \|Permission= \|other_versions= }} == {{int:license-header}} == {{PD-MUTCD-MI\|M1-6}} 0231
	18:29, 27 November 2006	500 × 500 (6 KB)	Stratosphere
	18:28, 27 November 2006	500 × 500 (3 KB)	Stratosphere
	18:27, 27 November 2006	500 × 500 (3 KB)	Stratosphere	{{Information \|Description=Shield art for M-231 in Michigan \|Source=Derivative work based on Image:M-203.svg by User:IW4 \|Date=November 27, 2006 \|Author=Nick Nolte \|Permission=Public Domain }}