Series M of the Michigan Manual on Uniform Traffic Control Devices is for marker signs. The following tables display only the signs specific to the sign manual in Michigan; consult MUTCD/M for marker signs in the national standard.
M1: Route Markers
- Main article: United States roads tagging/Routes#Michigan
| Sign or plaque
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Designation
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Name
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Tags
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Notes
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| M1-5
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M1-5
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County Route Marker
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| M1-5a
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M1-5a
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Inter County Route Marker
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M1-6
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State Route Marker (For Independent Use)
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M2: Junction Markers
| Sign or plaque
|
Designation
|
Name
|
Tags
|
Notes
|
| M2-2
|
Combination Junction
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| M2-2a
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Junction
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| M2-2b
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Abbreviated Junction (24" Route Marker)
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| M2-2c
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Abbreviated Junction (30" Route Marker)
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M3: Cardinal Direction Markers
| Sign or plaque
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Designation
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Name
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Tags
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Notes
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M4: Route Marker Auxiliaries
| Sign or plaque
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Designation
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Name
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Tags
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Notes
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M5: Advance Turn Arrow Auxiliary Signs
| Sign or plaque
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Designation
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Name
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Tags
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Notes
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M6: Directional Arrow Auxiliary Signs
| Sign or plaque
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Designation
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Name
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Tags
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Notes
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