United States roads tagging/Routes

This picture dictionary shows how to tag the most common routes in the United States, based on signage you see while field surveying or on Mapillary or OpenStreetCam. See Road signs in the United States for more discussion about these shields, Custom Highway Shields for information on implementing a renderer that displays shields based on these tags, and United States roads tagging for road tagging in general.

The ref=* values below are also used in destination:ref=*. In most states, guide signs omit the black background seen below.

Values of network=* for highways belonging to counties, cities and other sub-state administrative divisions should follow the local highway tagging guidelines. Spaces should be replaced with underscores, and place names should generally be unabbreviated.

Nationwide

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=I 80`	`network=US:I` `ref=80`
		`ref=I 75 Alternate`	`network=US:I:Alternate` `ref=75`
		`ref=I 75 Toll` `toll=yes`	`network=US:I` `ref=75` `toll=yes`
		`ref=I 74 Future`	`network=US:I:Future` `ref=74`
		`ref=I 80 Business`	`network=US:I:Business:Loop` `ref=80`
		`ref=I 196 Business`	`network=US:I:Business:Spur` `ref=196`
		`ref=US 50`	`network=US:US` `ref=50`
		`ref=US 50 Alternate`	`network=US:US:Alternate` `ref=50`
		`ref=US 50 Business`	`network=US:US:Business` `ref=50`
		`ref=US 50 Bypass`	`network=US:US:Bypass` `ref=50`
		`ref=US 50 Connector`	`network=US:US:Connector` `ref=50`
		`ref=US 50 Scenic`	`network=US:US:Scenic` `ref=50`
		`ref=US 50 Spur`	`network=US:US:Spur` `ref=50`
		`ref=US 50 Truck`	`network=US:US:Truck` `ref=50`
		`ref=FH 3`, `FR 3`, or `FFH 3`	no consensus^[1]
		`ref=BIA 18`	`network=US:BIA` `ref=18`
		`ref=CR 66`	`network=US:<state>:<county>`^[2] `network=US:<state>:CR`^[3] `ref=66`
		`ref=CR 66`

↑ As of September 2024, network=US:NF:<forest> and network=US:NFSR:<forest> are both in use, and a scheme consisting of network=US:USFS:primary, network=US:USFS:secondary and network=US:USFS:minor was once proposed.
↑ Network value for county road systems belonging to individual counties, found in the majority of states where numbered county roads are present.
↑ Network value for county road systems with state-coordinated numbering and signage. In some states, like Michigan and New Jersey, state-coordinated county road networks may coexist with networks belonging to individual counties.

Honorary and Tourist Routes

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`name=Blue Ridge Parkway`	`network=US:NPS:Blue_Ridge` `name=Blue Ridge Parkway`
		N/A	`network=US:GRR` `name=Great River Road`
		N/A	`network=GLCT` `ref=LECT` `name=Lake Erie Circle Tour`
		N/A	`network=GLCT` `ref=LHCT` `name=Lake Huron Circle Tour`
		N/A	`network=GLCT` `ref=LMCT` `name=Lake Michigan Circle Tour`
		N/A	`network=GLCT` `ref=LSCT` `name=Lake Superior Circle Tour`
		`name=Natchez Trace Parkway`	`network=US:NPS:Natchez_Trace` `name=Natchez Trace Parkway`
File:Ohio River Scenic Byway.jpg		N/A	`network=US:ORSB` `name=Ohio River Scenic Byway`
		N/A	`network=US:GLST` `name=Seaway Trail`
		N/A	`network=US:US:Historic` `ref=66`

Banners

Marker	Way	Relation
	`ref=* Alternate`	`network=*:Alternate`
	`ref=* Alternate`	`network=*:Alternate`
	`ref=* Business`	`network=*:Business`
	`ref=* Bypass`	`network=*:Bypass`
	`ref=* Connector`	`network=*:Connector`
	`ref=* Connector`	`network=*:Connector`
	`ref=* Emergency`	`route=detour` `network=*:Emergency`
	`ref=* Express`	`network=*:Express`
	`ref=* Future`	`network=*:Future`
	`ref=* Loop`	`network=*:Loop`
	`ref=* Old`	`network=*:Old`
	`ref=* Scenic`	`network=*:Scenic`
	`ref=* Spur`	`network=*:Spur`
	`ref=* Truck` `hgv=designated`	`network=*:Truck` `hgv=designated`
	`ref=* Toll` `toll=yes`	`network=*:Toll` `toll=yes`
	`ref=* Temporary`	`network=*:Temporary`
	`ref=* Temporary`	`network=*:Temporary`

Statewide

Alabama

For more details on this topic, see Alabama/Highway Relations#Tagging guide.

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=AL 17`	`network=US:AL` `ref=17`
		`ref=AL 17 Business`	`network=US:AL:Business` `ref=17`
		`ref=CR 66`	`network=US:AL:<county>`^[1] `ref=66`

↑ Identical shield used for all counties

Alaska

Main article: Alaska/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=AK 98`	`network=US:AK` `ref=98`

American Samoa

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=AS001`	`network=US:AS` `ref=001`

Arizona

Main article: Arizona/Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=AZ 87`	`network=US:AZ` `ref=87`

Arkansas

Main article: Arkansas/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=AR 367`	`network=US:AR` `ref=367`

California

Main article: California/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=US 50`	`network=US:US` `ref=50`
		`ref=CA 49`	`network=US:CA` `ref=49`
		`ref=CA 4 Business`	`network=US:CA:Business` `ref=4`
		`ref=CA 99 Toll` `toll=yes`	`network=US:CA` `ref=99` `toll=yes`
		`ref=G2`	`network=US:CA:CR`^[1] `ref=G2`
^[2]		`ref=CR 431`	`network=US:CA:<county>` `ref=431`
MENDOCINO 431 COUNTY ^[3]		`ref=CR 431`	`network=US:CA:<county>` `ref=431`
		N/A	`network=US:CA:San_Francisco:49_Mile_Scenic_Drive` `name=49 Mile Scenic Drive`

↑ Network value used only on county roads with state-coordinated numbering and signage
↑ Counties known to post blue pentagonal shields include Nevada, Sierra.
↑ Only Mendocino County is known to post green rectangular shields.

Colorado

Main article: Colorado/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=CO 135`	`network=US:CO` `ref=135`
		`ref=CO 7 Business`	`network=US:CO:Business` `ref=7`
		`ref=E470`	`network=US:CO:E470` `ref=E470`
		`name=Northwest Parkway`	`network=US:CO:NW` `ref=NW`
^[1]		`ref=CR 46`	`network=US:CO:<county>` `ref=46`
OURAY 46 COUNTY ^[2]
^[3]

↑ Counties known to post blue pentagonal shields include Archuleta, Chaffee, Conejos, Grand, Gunnison, Jackson, Lake, La_Plata, Larimer, Moffat, Park, Rio_Blanco, Rio_Grande, Saguache, San_Juan, Teller, Weld.
↑ Counties known to post green rectangular shields include Fremont, Ouray, Routt.
↑ Douglas County is the only known county in Colorado to post green pentagonal shields.

Connecticut

Main article: Connecticut/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=CT 15`	`network=US:CT` `ref=15`
		`name=Merritt Parkway`	`network=US:CT:Parkway` `name=Merritt Parkway`

Delaware

Main article: Delaware/Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=DE 1`	`network=US:DE` `ref=1`

District of Columbia

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=DC 295`	`network=US:DC` `ref=295`

Florida

Main article: Florida/State road relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=FL A1A`	`network=US:FL` `ref=A1A`
		`ref=FL 23 Toll` `toll=yes`	`network=US:FL:Toll` `ref=23` `toll=yes`
		`toll=yes`	`network=US:FL:Turnpike` `toll=yes`
		`ref=CR 66`	`network=US:FL:CR`^[1] `ref=66`

↑ Network value used on county roads with state-coordinated numbering and signage

Georgia

For more details on this topic, see Georgia (U.S. state)/State Highway Relations#Tagging guide.

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=GA 100`	`network=US:GA` `ref=100`

Guam

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=GU 8`	`network=US:GU` `ref=8`

Hawaii

Main article: Hawaii/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=HI 61`	`network=US:HI` `ref=61`

Idaho

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=ID 128`	`network=US:ID` `ref=128`
		`ref=ID 128 Connector`	`network=US:ID:Connector` `ref=128`
		`ref=ID 128 Business`	`network=US:ID:Business` `ref=128`
		`ref=ID 128 Spur`	`network=US:ID:Spur` `ref=128`

Illinois

Main article: Illinois/State Highway Relations

Main article: Illinois/County Road Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=IL 390`	`network=US:IL` `ref=390`
		`name=Chicago Skyway`	`network=US:IL:Cook:Chicago:Skyway`
		`ref=CR 66`	`network=US:IL:<county>`^[1] `ref=66`

↑ Identical shield used for all counties that post route shields. Counties known to post shields include Adams, Boone, Bureau, Champaign, Christian, Clay, Clinton, Coles, Cumberland, DeKalb, De_Witt, Douglas, DuPage, Edgar, Effingham, Fayette, Henderson, Henry, Iroquois, Kankakee, Kendall, Knox, La_Salle, Lake, Livingston, Logan, McDonough, McHenry, McLean, Macon, Mason, Menard, Peoria, Piatt, Rock_Island, Sangamon, Schuyler, Shelby, Saint_Clair, Winnebago, Woodford.

Indiana

Main article: Indiana/Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=SR 165`	`network=US:IN` `ref=165`
		`name=Indiana Toll Road`	`network=US:IN:Toll`

Iowa

Main article: Iowa/Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=IA 150`	`network=US:IA` `ref=150`
		`ref=CR R16`	`network=US:IA:CR`^[1] `ref=R16`

↑ Network value used on county roads with state-coordinated numbering and signage

Kansas

Main article: Kansas state highways

Main article: Kansas county routes

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=KS 6`	`network=US:KS` `ref=6`
		`name=Kansas Turnpike`	`network=US:KS:Turnpike` `name=Kansas Turnpike`
		`ref=CR 66`	`network=US:KS:<county>`^[1] `ref=66`

↑ Identical shield used for all counties that post route shields. Counties known to post shields include Clay, Cowley, Decatur, Douglas, Harvey, Leavenworth, Linn, McPherson, Ness, Rawlins, Riley, Sheridan.

Kentucky

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=KY 3487`	`network=US:KY` `ref=3487`
		`ref=AA`	`network=US:KY:AA` `ref=AA`
		`name=Cumberland Parkway`	`network=US:KY:Parkway` `name=Cumberland Parkway`

Louisiana

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=LA 1245`	`network=US:LA` `ref=1245`
		`ref=LA 1245`	`network=US:LA` `ref=1245`
		`ref=PR 547`	`network=US:LA:<parish>`^[1] `ref=547`
[1]^[2]	N/A	`name=Lake Pontchartrain Causeway`	`network=US:LA:Causeway` `name=Lake Pontchartrain Causeway`

↑ Identical shield used for all parishes that post route shields. Parishes known to post shields include Bienville, Caddo, Cameron, De_Soto, Grant, Iberia, Lincoln, Livingston, Natchitoches, Ouachita, Rapides, Red_River, Richland, Saint_Mary, Terrebonne, Union, Webster, Winn.
↑ The shield only appears on mile markers frequently posted along the roadway. The route is prominently identifiable on wayfinding signage but not using the shield.

Maine

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=ME 100`	`network=US:ME` `ref=100`
		`name=Maine Turnpike`	`network=US:ME:Turnpike`

Maryland

Main article: Maryland/Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=US 113 Business`	`network=US:US:Business` `ref=113`
		`ref=MD 45`	`network=US:MD` `ref=45`
		`ref=MD 3 Business`	`network=US:MD:Business` `ref=3`
<Pending Image>		`name=Greenmount Avenue/York Road`	`network=US:MD:Baltimore:Gateway`

Baltimore City is an independent county-equivalent entity which shares a name with surrounding Baltimore County. Baltimore County does not have any incorporated cities/municipalities, and does not designate any road routes, so no disambiguation is necessary for network=US:MD:Baltimore:Gateway. This tag is used for the Baltimore City designated Gateway routes which mark significant entry/exit points which cross the city limits.

Massachusetts

Main article: Massachusetts/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=MA 140`	`network=US:MA` `ref=140`
		`name=Massachusetts Turnpike`	`network=US:MA:Turnpike`

Michigan

Main article: Michigan/Highways

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=M 1`	`network=US:MI` `ref=1`
		`ref=M 185`	`network=US:MI`^[1] `ref=185`
		`ref=CR A2`	`network=US:MI:CR`^[2] `ref=A2`
^[3]		`ref=CR 66`	`network=US:MI:<county>` `ref=66`
MANISTEE 66 COUNTY ^[4]
MARQUETTE 66 COUNTY ^[5]

↑ Network value conflated with normal state highways
↑ Network value used only on county roads with state-coordinated numbering and signage
↑ Counties known to post blue pentagonal shields include Benzie, Gogebic, Kalkaska, Montcalm, Roscommon.
↑ Counties known to post green rectangular shields include Delta, Manistee.
↑ Counties known to post white rectangular shields include Iron, Luce, Marquette, Oscoda, Schoolcraft.

Minnesota

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=MN 61`	`network=US:MN` `ref=61`
		`ref=MN 371 Business`	`network=US:MN:Business` `ref=371`
		`ref=CH 42`	`network=US:MN:<county>:CSAH` `ref=42`
		`ref=CR 11`	`network=US:MN:<county>:CR` `ref=11`
TWP 21		`ref=TWP 21`	`network=US:MN:<county>:TWP` `ref=21`
UT 9115		`ref=UT 9115`	`network=US:MN:<county>:UT` `ref=9115`
		`ref=CR 203`	`network=US:MN:<county>:Park_Access` `ref=203`

Mississippi

Main article: Mississippi/Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=MS 347`	`network=US:MS` `ref=347`
		`ref=MS 315 Scenic`	`network=US:MS:Scenic` `ref=315`
		`ref=CR 66`	`network=US:MS:<county>`^[1] `ref=66`

↑ Identical shield used for all counties that post route shields. Counties known to post shields include Alcorn, Calhoun, Carroll, Lafayette, Lee, Prentiss, Smith, Tippah, Union, Yalobusha.

Missouri

Main article: Missouri state highways

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=MO 174`	`network=US:MO` `ref=174`
		`ref=MO JJ`	`network=US:MO:Supplemental` `ref=JJ`
^[1]		`ref=CR 66`	`network=US:MO:<county>` `ref=66`
LEWIS 66 COUNTY ^[2]		`ref=CR 66`	`network=US:MO:<county>` `ref=66`
		`ref=Red Route`	`network=US:MO:Taney:Branson` `ref=Red Route` `colour=red`
		`name=Avenue of the Saints`	N/A

↑ Counties known to post blue pentagonal shields include Bollinger, Butler, Cape_Girardeau, Dunklin, Madison, Mississippi, Perry, Stoddard, Taney, Wayne.
↑ Only Lewis County is known to post brown rectangular shields.

Montana

Main article: Montana/Highways

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=MT 1`	`network=US:MT` `ref=1`
		`ref=MT 243`	`network=US:MT:secondary` `ref=243`
		`ref=CR 66`	`network=US:MT:Dawson` `network=US:MT:Richland` `ref=66`

Nebraska

Main article: Nebraska/Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NE 92`	`network=US:NE` `ref=92`
		`ref=NE 26A Link`	`network=US:NE:Link` `ref=26A`
		`ref=NE 35F Rec`	`network=US:NE:Rec` `ref=35F`
		`ref=NE 26D Spur`	`network=US:NE:Spur` `ref=26D`

Nevada

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NV 318`	`network=US:NV` `ref=318`
		`ref=CC 215`	`network=US:NV:Clark` `ref=215`

New Hampshire

Main article: New Hampshire/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NH 3A`	`network=US:NH` `ref=3A`
		`name=Blue Star Turnpike`	`network=US:NH:Turnpike` `name=Blue Star Turnpike`
		`name=Everett Turnpike`	`network=US:NH:Turnpike` `name=Everett Turnpike`
		`name=Spaulding Turnpike`	`network=US:NH:Turnpike` `name=Spaulding Turnpike`

New Jersey

For more details on this topic, see New Jersey/State and County Route Relations#Tagging guide.

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NJ 133`	`network=US:NJ` `ref=133`

New Mexico

Main article: New Mexico/State Road Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NM 65`	`network=US:NM` `ref=65`
		`ref=CR 66`	`network=US:NM:<county>`^[1] `ref=66`

↑ Identical shield used for all counties that post route shields. Counties known to post shields include Cibola, Doña_Ana, Eddy, Guadalupe, Lea, Lincoln, Luna, McKinley, Mora, Otero, Rio_Arriba, Sandoval, San_Juan, Santa_Fe, Sierra, Taos, Torrance, Union. San Juan County additionally posts a network of "NCM" routes (network=US:NM:San_Juan:NCM) with an otherwise identical red-on-white pentagon.

New York

For more details on this topic, see New York (state)/State Route Relations#Tagging guide.

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NY 77`	`network=US:NY` `ref=77`

North Carolina

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NC 55`	`network=US:NC` `ref=55`
		`ref=CLT 4`	`network=US:NC:Mecklenburg:Charlotte` `ref=4`

North Dakota

Main article: North Dakota/Route relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=ND 13`	`network=US:ND` `ref=13`
		`ref=ND 13`	`network=US:ND` `ref=13`
^[1]		`ref=CR 66`	`network=US:ND:<county>` `ref=66`
KIDDER 66 COUNTY ^[2]
TOWNER 66 COUNTY ^[3]

↑ Counties known to post blue pentagonal shields include Barnes, Benson, Bottineau, Burke, Cass, Cavalier, Dickey, Divide, Foster, Grand_Forks, Griggs, LaMoure, McHenry, McIntosh, McKenzie, McLean, Mercer, Morton, Mountrail, Nelson, Pembina, Ramsey, Ransom, Renville, Richland, Sargent, Sioux, Steele, Stutsman, Traill, Walsh, Ward, Wells, Williams.
↑ Counties known to post green rectangular shields include Eddy, Kidder.
↑ Only Towner County is known to post white rectangular shields.

Northern Mariana Islands

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=NMI 304`	`network=US:MP` `ref=304`

Ohio

Main article: Ohio/Route relations/Networks

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=SR 2`	`network=US:OH` `ref=2`
		`name=Ohio Turnpike`	`name=Ohio Turnpike` `network=US:OH:Turnpike` `official_name=James W. Shocknessy Ohio Turnpike`

Oklahoma

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=OK 3`	`network=US:OK` `ref=3`
		`name=Chickasaw Turnpike`	`network=US:OK:Turnpike` `name=Chickasaw Turnpike`
[2]		`ref=CR G`	`network=US:OK:Tulsa:Tulsa` `ref=G`
[3]		`ref=CR LL`	`network=US:OK:Tulsa:Tulsa` `ref=LL`

Oregon

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=OR 140`	`network=US:OR` `ref=140`
		`ref=CR 66`	`network=US:OR:<county>`^[1] `ref=66`

↑ Identical shield used for all counties that post route shields. Counties known to post shields include Douglas, Grant, Lake, Lane, Morrow.

Pennsylvania

Main article: Pennsylvania/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=PA 39`	`network=US:PA` `ref=39`
		`ref:penndot=SR 3046`	N/A
		`ref=PA Tpke 43`	`network=US:PA:Turnpike` `ref=39`
		`ref=PATP`	`network=US:PA:Turnpike`
		`ref=Orange Belt`	`network=US:PA:Allegheny:Belt` `ref=Orange Belt` `colour=#FF7F00`
		`ref=US 30 Alternate Truck Business`	`network=US:US:Business:Truck:Alternate` `ref=30`

Puerto Rico

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=PR-1`	`network=US:PR:primary` `ref=1`
			`network=US:PR:primary_urban` `ref=1`
			`network=US:PR:secondary` `ref=1`
			`network=US:PR:tertiary` `ref=1`

Rhode Island

Main article: Rhode Island/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=RI 12`	`network=US:RI` `ref=12`

South Carolina

Main article: South Carolina/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=SC 462`	`network=US:SC` `ref=462`

South Dakota

Main article: South Dakota/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=SD 63`	`network=US:SD` `ref=63`
251		`ref=SD 251`	`network=US:SD:Secondary` `ref=251`
^[1]		`ref=CR 66`	`network=US:SD:<county>` `ref=66`
TRIPP 66 COUNTY ^[2]		`ref=CR 66`	`network=US:SD:<county>` `ref=66`

↑ Counties known to post blue pentagonal shields include Beadle, Bon_Homme, Brookings, Charles_Mix, Clark, Codington, Corson, Custer, Day, Deuel, Edmunds, Fall_River, Faulk, Grant, Hamlin, Harding, Hyde, Kingsbury, Lake, Lincoln, Marshall, McCook, McPherson, Meade, Minnehaha, Moody, Perkins, Roberts, Spink, Stanley, Turner, Union, Yankton.
↑ Counties known to post green rectangular shields include Brown, Tripp.

Tennessee

Main article: Tennessee/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`highway=primary`/`trunk`/`motorway` `ref=SR 125` or `TN 125`^[1]	`network=US:TN:primary`^[2] `ref=125`
		`highway=secondary`^[2] `ref=SR 125`	`network=US:TN:secondary` `ref=125`
	N/A	No consensus (2022-02-11)
		`ref=CR 66`	`network=US:TN:McMinn` `ref=66`

↑ "TN" is an attempt to differentiate between primary and secondary routes, but this approach isn't universally followed.
↑ ^2.0 ^2.1 If a single route has both primary and secondary route segments, map the segments as individual route relations, then join them together in a route relation tagged network=US:TN.

Texas

For more details on this topic, see Texas/State Route Relations.

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
	TEXAS 273	`ref=TX 273`	`network=US:TX` `ref=273`
		`ref=Loop 12`	`network=US:TX:Loop` `ref=12`
		`ref=Spur 408`	`network=US:TX:Spur` `ref=408`
	F.M. 2696	`ref=FM 2696`	`network=US:TX:FM` `ref=2696`
	R.M. 2381	`ref=RM 2381`	`network=US:TX:RM` `ref=2381`

Utah

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=UT 210`	`network=US:UT` `ref=210`

Vermont

Main article: Vermont/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=VT 16`	`network=US:VT` `ref=16`
		`ref=VT 16`	`network=US:VT:Town` `ref=16`

Virginia

Main article: Virginia/State Route Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=VA 5`	`network=US:VA` `ref=5`
		`ref=SR 685`	`network=US:VA:Secondary` `ref=685`

Virgin Islands

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=VI 104`	`network=US:VI` `ref=104`

Washington

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=WA 20`	`network=US:WA` `ref=20`
		`ref=WA 20 Spur`	`network=US:WA:Spur` `ref=20`
ASOTIN 66 COUNTY ^[1]		`ref=CR 66`	`network=US:WA:Asotin` `ref=66`

↑ Only Asotin County is known to post green rectangular shields.

West Virginia

Main article: West Virginia § Road tagging guidelines

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=WV 42`	`network=US:WV` `ref=42`
		`ref=CR 91`	`network=US:WV:County`^[1] `ref=91` `is_in:county=Gilmer` (example)
		`ref=CR 91/1`	`network=US:WV:County`^[1] `ref=91/1` `is_in:county=Harrison` (example)
N/A		`ref=HARP 908`	`network=US:WV:HARP` `ref=908`

↑ ^1.0 ^1.1 The value of network=* should be US:WV:County verbatim, not replaced with the name of the county (such as US:WV:Kanawha, an example of common practice prior to 2022). "County roads" in West Virginia are actually a state-maintained, state-signed system of secondary roads. Shields are identical in all counties.

Wisconsin

Main article: Wisconsin/State Highway Relations

Main article: Wisconsin/County Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=WI 35`	`network=US:WI` `ref=35`
		`ref=CTH H`	`network=US:WI:<county>`^[1] `ref=H`
		`ref=R<number>`	`network=US:WI:Rustic` `ref=R<number>`

↑ Identical shield used for all counties

Wyoming

Main article: Wyoming/State Highway Relations

Marker		Way	Relation
Reassurance	Guide sign	Way	Relation
		`ref=WY 200`	`network=US:WY` `ref=200`
		`ref=CR 66`	`network=US:WY:<county>`^[1] `ref=66`

↑ Identical shield used for all counties that post route shields. Counties known to post shields include Albany, Big_Horn, Carbon, Converse, Crook, Fremont, Hot_Springs, Johnson, Lincoln, Natrona, Niobrara, Park, Sheridan, Sublette, Sweetwater, Uinta, Washakie, Weston.

Sources

[usfs_consensus_2024-09-1] As of September 2024, network=US:NF:<forest> and network=US:NFSR:<forest> are both in use, and a scheme consisting of network=US:USFS:primary, network=US:USFS:secondary and network=US:USFS:minor was once proposed.

[county_individual-2] Network value for county road systems belonging to individual counties, found in the majority of states where numbered county roads are present.

[county_coordinated-3] Network value for county road systems with state-coordinated numbering and signage. In some states, like Michigan and New Jersey, state-coordinated county road networks may coexist with networks belonging to individual counties.

[AL_county_pentagon-4] Identical shield used for all counties

[CA_county_coordinated-5] Network value used only on county roads with state-coordinated numbering and signage

[CA_county_pentagon-6] Counties known to post blue pentagonal shields include Nevada, Sierra.

[CA_county_green-7] Only Mendocino County is known to post green rectangular shields.

[CO_county_pentagon-8] Counties known to post blue pentagonal shields include Archuleta, Chaffee, Conejos, Grand, Gunnison, Jackson, Lake, La_Plata, Larimer, Moffat, Park, Rio_Blanco, Rio_Grande, Saguache, San_Juan, Teller, Weld.

[CO_county_green-9] Counties known to post green rectangular shields include Fremont, Ouray, Routt.

[CO_county_pentagon_green-10] Douglas County is the only known county in Colorado to post green pentagonal shields.

[FL_county_coordinated-11] Network value used on county roads with state-coordinated numbering and signage

[IL_county_pentagon-12] Identical shield used for all counties that post route shields. Counties known to post shields include Adams, Boone, Bureau, Champaign, Christian, Clay, Clinton, Coles, Cumberland, DeKalb, De_Witt, Douglas, DuPage, Edgar, Effingham, Fayette, Henderson, Henry, Iroquois, Kankakee, Kendall, Knox, La_Salle, Lake, Livingston, Logan, McDonough, McHenry, McLean, Macon, Mason, Menard, Peoria, Piatt, Rock_Island, Sangamon, Schuyler, Shelby, Saint_Clair, Winnebago, Woodford.

[IA_county_coordinated-13] Network value used on county roads with state-coordinated numbering and signage

[KS_county_pentagon-14] Identical shield used for all counties that post route shields. Counties known to post shields include Clay, Cowley, Decatur, Douglas, Harvey, Leavenworth, Linn, McPherson, Ness, Rawlins, Riley, Sheridan.

[LA_parish_pentagon-15] Identical shield used for all parishes that post route shields. Parishes known to post shields include Bienville, Caddo, Cameron, De_Soto, Grant, Iberia, Lincoln, Livingston, Natchitoches, Ouachita, Rapides, Red_River, Richland, Saint_Mary, Terrebonne, Union, Webster, Winn.

[LA_causeway-16] The shield only appears on mile markers frequently posted along the roadway. The route is prominently identifiable on wayfinding signage but not using the shield.

[MI_state_conflated-17] Network value conflated with normal state highways

[MI_county_coordinated-18] Network value used only on county roads with state-coordinated numbering and signage

[MI_county_pentagon-19] Counties known to post blue pentagonal shields include Benzie, Gogebic, Kalkaska, Montcalm, Roscommon.

[MI_county_green-20] Counties known to post green rectangular shields include Delta, Manistee.

[MI_county_white-21] Counties known to post white rectangular shields include Iron, Luce, Marquette, Oscoda, Schoolcraft.

[1]

[2]

[3]

[1]

[1]

[2]

[3]

[1]

[2]

[3]

[1]

[1]

[1]

[1]

[1]

[2]

[1]

[2]

[3]

[4]

[5]

[1]

[1]

[2]

[1]

[1]

[2]

[3]

[1]

[1]

[2]

[1]

[2]

[1]

[1]

[1]

[1]