MUTCD/M

Series M of the MUTCD is for marker signs.

M1: Route Markers

Main article: United States roads tagging/Routes

Sign or plaque	Designation	Name	Tags	Notes
	M1-1	Interstate Route (1 or 2 digits)	ref=I 22 on the way type=route route=road network=US:I ref=22
	M1-1	Interstate Route (3 digits)	ref=I 495 on the way type=route route=road network=US:I ref=495
	M1-2	Off-Interstate Route (1 or 2 digits)	ref=I 22 Business on the way type=route route=road network=US:I:Business:Loop ref=22
	M1-2	Off-Interstate Route (3 digits)	ref=I 205 Business on the way type=route route=road network=US:I:Business:Loop ref=205
	M1-3	Off-Interstate Route (1 or 2 digits)	ref=I 70 Business on the way type=route route=road network=US:I:Business:Spur ref=70
	M1-3	Off-Interstate Route (3 digits)	ref=I 385 Business on the way type=route route=road network=US:I:Business:Loop ref=385
	M1-4	U.S. Route (1 or 2 digits)	ref=US 40 on the way type=route route=road network=US:US ref=40
	M1-4	U.S. Route (3 digits)	ref=US 798 on the way type=route route=road network=US:US ref=798
	M1-5	State Route (1 or 2 digits)	ref=* 18 on the way type=route route=road network=US:* ref=18	ref=* prefix on the way depends on the state West Virginia uses this marker for county routes, not state routes
	M1-5	State Route (3 digits)	ref=* 297 on the way type=route route=road network=US:* ref=297	ref=* prefix on the way depends on the state West Virginia uses this marker for county routes, not state routes
	M1-6	County Route (1, 2, or 3 digits)	ref=CR 16, CH 16, or C-16 on the way type=route route=road network=US:*:Clinton ref=16
	M1-7	Forest Route (1, 2, or 3 digits)	ref=FH *, FR *, or FFH * on the way type=route route=road network=US:NF:* ref=*
	M1-8	Bicycle Route	rcn_ref=18 or lcn_ref=18 on the way type=route route=road cycle_network=US:* ref=18 plus network=rcn or lcn
	M1-8a	State or Local Bicycle Route	lcn_ref=44 or rcn_ref=44 on the way type=route route=road cycle_network=US:* ref=44 plus network=lcn or rcn
	M1-8b	Non-Numbered Bicycle Route (2 lines)	lcn=yes or rcn=yes on the way type=route route=road cycle_network=US:* name=Queens Trail plus network=lcn or rcn
	M1-8c	Non-Numbered Bicycle Route (3 lines)	lcn=yes or rcn=yes on the way type=route route=road cycle_network=US:* name=Taughannock Heritage Trail plus network=lcn or rcn
	M1-9	U.S. Bicycle Route	ncn_ref=23 on the way type=route route=road network=ncn cycle_network=US:US ref=23
	M1-10	Eisenhower Interstate System	type=route route=road network=US:I
	M1-10a	Eisenhower Interstate System	type=route route=road network=US:I

M2: Junction Markers

Sign or plaque	Designation	Name	Tags	Notes
	M2-1P	Junction	ref=* on the cross street
	M2-2	Combination Junction (2 route signs)	ref=US 47;SR 3 on the cross street	ref=* prefix varies by state

M3: Cardinal Direction Markers

Sign or plaque	Designation	Name	Tags	Notes
	M3-1P	North	Roadway has role north in a route relation or the route relation has direction=north destination:ref=* North on a ramp	See Route directions
	M3-2P	East	Roadway has role east in a route relation or the route relation has direction=east destination:ref=* East on a ramp	See Route directions
	M3-3P	South	Roadway has role south in a route relation or the route relation has direction=south destination:ref=* South on a ramp	See Route directions
	M3-4P	West	Roadway has role west in a route relation or the route relation has direction=west destination:ref=* West on a ramp	See Route directions

M4: Route Marker Auxiliaries

Sign or plaque	Designation	Name	Tags	Notes
	M4-1P	Alternate	ref=* Alternate or * Alt network=*:Alternate modifier=Alternate destination:ref=* Alternate or * Alt on a ramp
	M4-1aP	Alt	ref=* Alt or * Alternate network=*:Alternate modifier=Alt destination:ref=* Alt or * Alternate on a ramp
	M4-2P	By-Pass	ref=* Bypass or * Byp network=*:Bypass modifier=Bypass destination:ref=* Bypass or * Byp on a ramp
	M4-3P	Business	ref=* Business or * Bus network=*:Business modifier=Business destination:ref=* Business or * Bus on a ramp
	M4-4P	Truck	ref=* Truck hgv=designated network=*:Truck modifier=Truck hgv=designated destination:ref=* Truck hgv=designated on a ramp
	M4-5P	To	destination:ref:to=*
	M4-6P	End	N/A
	M4-7P	Temporary	ref=* Temporary or * Temp network=*:Temporary modifier=Temporary destination:ref=* Temporary or destination:ref=* Temp on a ramp	Only tag if long-term
	M4-7aP	Temp	ref=* Temp or * Temporary network=*:Temporary modifier=Temp destination:ref=* Temp or destination:ref=* Temporary on a ramp	Only tag if long-term
	M4-8P	Detour	ref=* Detour type=route route=detour network=*:Detour modifier=Detour destination:ref=* Detour on a ramp	Only tag permanently signed detour routes
	M4-8a	End Detour	N/A
	M4-8b	End	N/A
	M4-9L	Detour	N/A
	M4-9R
	M4-9aL	Bike/Pedestrian Detour	N/A
	M4-9aR
	M4-9bL	Pedestrian Detour	N/A
	M4-9bR
	M4-9cL	Bike Detour	N/A
	M4-9cR
	M4-10L	Detour	N/A
	M4-10R
	M4-11	Emergency Route	destination=A on the roadway type=route route=detour to=A
	M4-11a	Emergency Route	destination=A on the roadway type=route route=detour to=A
	M4-11bP	Emergency Route To	destination=* on the roadway type=route route=detour to=*
	M4-11cP	Emergency Route To	destination=* on the roadway type=route route=detour to=*
	M4-12	End Emergency Route	type=route route=detour relation ends
	M4-14P	Begin	N/A
	M4-17	Toll Collector Symbol	barrier=toll_booth self_service=no
	M4-18	Exact Change Symbol	barrier=toll_booth self_service=only payment:cash=yes payment:change=no

M5: Advance Turn Arrow Auxiliary Signs‎

Sign or plaque	Designation	Name	Tags	Notes
	M5-1PL	Advance Turn Arrow (90-degree angle)‎	N/A
	M5-1PR
	M5-2PL	Advance Turn Arrow (45-degree angle)	N/A
	M5-2PR
	M5-3PL	Advance Turn Arrow (Roundabout)	N/A
	M5-3PR
	M5-4P	Lane Designation	destination:ref:lanes=*
	M5-5P	Lane Designation	destination:ref:lanes=*
	M5-6P	Lane Designation	destination:ref:lanes=*

M6: Directional Arrow Auxiliary Signs‎

Sign or plaque	Designation	Name	Tags	Notes
	M6-1PL	Directional Arrow	N/A
	M6-1PR
	M6-2PL	Directional Arrow	N/A
	M6-2PR
	M6-2aPL	Directional Arrow	N/A
	M6-2aPR
	M6-3P	Directional Arrow	N/A
	M6-4P	Directional Arrow	N/A
	M6-5PL	Directional Arrow	N/A
	M6-5PR
	M6-6PL	Directional Arrow	N/A
	M6-6PR
	M6-7PL	Directional Arrow	N/A
	M6-7PR

M10: Scenic Area

Sign or plaque	Designation	Name	Tags	Notes
	M10-1	National Scenic Byway	?	Route list
	M10-1aP	National Scenic Byway	?	Route list
	M10-2	Byway Identification	name=Old Shore Road on the route relation
	M10-2aP	Byway Identification (plaque)	name=Old Shore Road on the route relation
	M10-3	State Scenic Byway System	?
	M10-3a	State Scenic Byway System – Simple Graphic and Byway Identification	?
	M10-3bP	Scenic Byway	scenic=yes on the roadway or route relation

M11: National Historic Trails

Sign or plaque	Designation	Name	Tags	Notes
	M11-1	National Historic Trail – Identification	type=route route=road network=US:NHT name=Oregon Trail	Route list
	M11-1aP	National Historic Trail – Historic Route	?	How to distinguish the historic route from the auto tour route?
	M11-1bP	National Historic Trail – Crossing	type=route route=road network=US:NHT on the original alignment crossing the modern alignment
	M11-1cP	National Historic Trail – Auto Tour Route	?	How to distinguish the historic route from the auto tour route?
	M11-1dP	National Historic Trail – Distance	Include the next 25 miles (40 km) of roadway within a type=route route=road network=US:NHT relation

External links

• 11th Edition Chapter 2D. Guide Signs—Conventional Roads
• 11th Edition Chapter 2E. Guide Signs—Freeways and Expressways
• 11th Edition Chapter 2F. Toll Road Signs
• 11th Edition Section 6I.02. Detour Signs and Plaques
• 11th Edition Chapter 9D. Guide and Service Signs
• Diagrams of route signs of the United States