AARoads:Naming conventions

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United States

System Subtype or Region Official name Article title Abbreviation
Interstate Highway System Primary Interstate X Interstate X
Interstate X (State)[a] 		I-X[b][c]
Primary, state-detail Interstate X Interstate X in State
Auxiliary Interstate X Interstate X
Interstate X (State)[a]
Business loops Interstate X Business Loop,
Business Loop Interstate X 		Interstate X Business (City, State) I-X BL
BL I-X
I-X Bus.
Business spurs Interstate X Business Spur
Business Spur Interstate X 		I-X BS
BS I-X
I-X Bus.
United States Numbered Highway System Primary U.S. Route X[d] U.S. Route X US X
US-X[e]
Primary, state-detail U.S. Route X U.S. Route X in State
Alternate routes U.S. Route X Alternate,
Alternate U.S. Route X 		U.S. Route X Alternate (Location) US X Alt.
Alt. US X
US XA[e]
Business routes U.S. Route X Business,
Business U.S. Route X 		U.S. Route X Business (Location) US X Bus.
Bus. US X
US XB[e]
Bypass routes U.S. Route X Bypass,
Bypass U.S. Route X 		U.S. Route X Bypass (Location) US X Byp.
Byp. US X[e]
Scenic routes U.S. Route X Scenic,
Scenic U.S. Route X 		U.S. Route X Scenic (Location) US X Scenic
Scenic US X[e]
Spur routes U.S. Route X Spur,
Spur U.S. Route X 		U.S. Route X Spur (Location) US X Spur
Spur US X
US XS[e]
Truck routes U.S. Route X Truck,
Truck U.S. Route X 		U.S. Route X Truck (Location) US X Truck
Truck US X[e]
State highways Alabama State Route X Alabama State Route X SR X
Alaska Alaska Route X Alaska Route X[f] AK-X
Arizona State Route X Arizona State Route X SR X
Arkansas Highway X Arkansas Highway X AR X
California State Route X California State Route X SR X
Colorado State Highway X Colorado State Highway X SH X
Connecticut Route X Connecticut Route X Route X
Delaware Delaware Route X Delaware Route X DE X
Florida State Road X Florida State Road X SR X
Georgia State Route X Georgia State Route X SR X
Hawaii Route X Hawaii Route X Route X
Idaho State Highway X Idaho State Highway X SH-X
Illinois Illinois Route X Illinois Route X IL X
Indiana State Road X Indiana State Road X SR X
Iowa Iowa Highway X Iowa Highway X Iowa X
Kansas K-X K-X (Kansas) K-X
Kentucky Kentucky Route X Kentucky Route X KY X
Louisiana Louisiana Highway X Louisiana Highway X LA X
Maine State Route X Maine State Route X SR X
Maryland Maryland Route X Maryland Route X MD X
Massachusetts Route X Massachusetts Route X Route X
Michigan M-X M-X (Michigan) M-X
Minnesota Minnesota State Highway X Minnesota State Highway X MN X
Mississippi Mississippi Highway X Mississippi Highway X MS X
Missouri Route X Missouri Route X Route X
Montana Montana Highway X Montana Highway X MT X
Nebraska Nebraska Highway X Nebraska Highway X N-X
Nevada State Route X Nevada State Route X SR X
New Hampshire New Hampshire Route X New Hampshire Route X NH X
New Jersey Route X New Jersey Route X Route X
New Mexico State Road X New Mexico State Road X NM X
New York New York State Route X New York State Route X NY X
North Carolina NC X North Carolina Highway X NC X
North Dakota North Dakota Highway X North Dakota Highway X ND X
Ohio State Route X Ohio State Route X SR X
Oklahoma State Highway X Oklahoma State Highway X SH-X
Oregon Oregon Route X Oregon Route X OR X
Pennsylvania Pennsylvania Route X Pennsylvania Route X PA X
Rhode Island Route X Rhode Island Route X Route X
South Carolina South Carolina Highway X South Carolina Highway X SC X
South Dakota Highway X South Dakota Highway X SD X
Tennessee State Route X Tennessee State Route X SR X
Texas State Highway X Texas State Highway X SH X
Utah State Route X Utah State Route X SR-X
Vermont Vermont Route X Vermont Route X VT X
Virginia State Route X Virginia State Route X SR X
Washington State Route X Washington State Route X SR X
West Virginia West Virginia Route X West Virginia Route X WV X
Wisconsin State Trunk Highway X Wisconsin Highway X WIS X
Wyoming Wyoming Highway X Wyoming Highway X WYO X
Secondary highways Kentucky Kentucky Route X Kentucky Route X KY X
Missouri (supplemental) Route X Route X (Y County, Missouri) Route X
Montana Secondary Highway X Montana Highway X S-X
Nebraska Connecting Link X
Spur X
Recreational Road X 		Nebraska Link X
Nebraska Spur X
Nebraska Recreational Road X 		L-X
S-X
R-X
Pennsylvania (quadrant) State Route X State Route X (Y County, Pennsylvania) SR X
Tennessee State Route X Tennessee State Route X SR X
Virginia State Route X Virginia State Route X SR X
Territorial/District highways American Samoa American Samoa Highway X American Samoa Highway X ASXXXX[g]
District of Columbia District of Columbia Route X District of Columbia Route X DC X
Guam Guam Highway X Guam Highway X GH-X
Northern Mariana Islands Northern Mariana Islands Highway X Northern Mariana Islands Highway X Hwy. X
Puerto Rico PR-X Puerto Rico Highway X PR-X
U.S. Virgin Islands U.S. Virgin Islands Highway X U.S. Virgin Islands Highway X Hwy X
County/Parish roads General County Road X
County Route X 		County Road X (Y County, <state>)
County Route X (Y County, <state>) 		CR X
Louisiana Parish Road X Parish Road X (Y Parish, Louisiana) PR X
Michigan A-X
County Road X 		A-2 (Michigan)
County Road X (Y County, Michigan) 		A-X
CR X
Minnesota County State-Aid Highway X
County Road X 		County State-Aid Highway X (Y County, Minnesota)
County Road X (Y County, Minnesota) 		CSAH X
CR X
Wisconsin County Trunk Highway X County Trunk Highway X (Y County, Wisconsin) CTH-X

Canada

Province/Territory Official name Article title Abbreviation
Alberta Highway x Alberta Highway x Hwy x
British Columbia Highway x British Columbia Highway x Hwy x
Manitoba Highway x
Provincial Road x 		Manitoba Highway x
Manitoba Provincial Road x 		PTH x
PR x
Winnipeg city routes Route x Winnipeg Route x Route x
New Brunswick Route x New Brunswick Route x Route x
Newfoundland and Labrador Route x Newfoundland and Labrador Route x Route x
Northwest Territories Highway x Northwest Territories Highway x Highway x
Nova Scotia Trunk x (1-2 digit)
Highway x (100-series)
Route x (200 and up) 		Nova Scotia Trunk x
Nova Scotia Highway x
Nova Scotia Route x 		Trunk x
Highway x
Route x
Nunavut no numbered routes
Ontario King's Highway x Ontario Highway X Highway x
Ontario county roads Y <division> Road x <divisional> Road x (<division> Y, Ontario) [h] <d>R x
Quebec Route x
Autoroute x 		Quebec Route x
Quebec Autoroute x 		Route x
A-x
Prince Edward Island Route x Prince Edward Island Route x Route x
Saskatchewan Highway x Saskatchewan Highway X Hwy x
Yukon Highway x Yukon Highway X Hwy x

Spain

Territory System Province
or island 		Official name Article title Abbreviation
Europe Red de Carreteras Europeas Ruta europea E-X European route EX E-X
Red de Carreteras Europeas, in detail European route EX in Spain
Spain Red de Carreteras del Estado "Denominación" column "Denominación" column (Spain)
for motorways, where available

A-X motorway (Spain)

City-X motorway (Spain)

N-X road (Spain)

City-X road (Spain)

A-X
N-X
City-X
Andalucía Red Básica Estructurante "Denominación" column A-X motorway (Andalusia, Spain)

A-X road (Andalusia, Spain)

A-X
Red Básica de Articulación
Red Intercomarcal
Red Complementaria Metropolitana
Red Complementaria (Resto)
Red Provincial Almería AL-X road (province, Spain) AL-X
Cádiz CA-X road (province, Spain) CA-X
Córdoba CO-X road (province, Spain) CO-X
Granada GR-X road (province, Spain) GR-X
Huelva HU-X road (province, Spain) HU-X
Jaén JA-X road (province, Spain) JA-X
Málaga MA-X road (province, Spain) MA-X
Sevilla SE-X road (province, Spain) SE-X
Aragón Red de Alta Capacidad "Nombre" column ARA-AX motorway (Aragón, Spain) ARA-AX
Red Básica A-X road (Aragón, Spain) A-X
Red Comarcal
Red Local
Red de carreteras y caminos
vecinales a cargo de la
Diputación Provincial de Huesca 		Huesca HU-V-X road (Huesca, Spain) HU-V-X
Red de carreteras de
titularidad Diputación
Provincial de Teruel 		Teruel "Nombre" column
(INCOMPLETE LIST) 		TE-V-X road (Teruel, Spain)

TE-X road (Teruel, Spain)

TE-V-X
TE-X
Red Viaria Provincial Zaragoza "Denominación" column CP-X road (Zaragoza, Spain)

CV-X road (Zaragoza, Spain)

VP-X road (Zaragoza, Spain)

CP-X
CV-X
VP-X
Asturias Red Regional "Denominación" column (motorway name) (Asturias, Spain)
for motorways, where available

AS-X motorway (Asturias, Spain)

AS-X road (Asturias, Spain)

AS-X
Red Comarcal
Red Local de Primer Orden
Red Local de Segundo Orden City-X
Islas Baleares Red Primaria Mallorca (motorway name) (Mallorca, Spain)
for motorways, where available

Ma-X motorway (Mallorca, Spain)

Ma-X road (Mallorca, Spain)

Ma-X
Red Secundaria
Menorca "Nom" column Me-X road (Menorca, Spain) Me-X
Ibiza EI-X road (Ibiza, Spain) EI-X
Canarias Tenerife "Denominación" column "Denominación" column (Tenerife, Spain)
for motorways, where available

TF-X motorway (Tenerife, Spain)

TF-X road (Tenerife, Spain)

TF-X
Gran Canaria "Denominación" column "Denominación" column (Gran Canaria, Spain)
for motorways, where available

GC-X motorway (Gran Canaria, Spain)

GC-X road (Gran Canaria, Spain)

GC-X
Lanzarote "Denominación" column "Denominación" column (Lanzarote, Spain)
for motorways, where available

LZ-X motorway (Lanzarote, Spain)

LZ-X road (Lanzarote, Spain)

LZ-X
Fuerteventura FV-X motorway (Fuerteventura, Spain)

FV-X road (Fuerteventura, Spain)

FV-X
La Palma "Denominación" column LP-X road (La Palma, Spain) LP-X
La Gomera "Denominación" column GM-X road (La Gomera, Spain) GM-X
El Hierro HI-X road (El Hierro, Spain) HI-X
Cantabria Carreteras Autonómicas Primarias "Denominación" column CA-X road (Cantabria, Spain) CA-X
Carreteras Autonómicas Secundarias
Carreteras Autonómicas Locales
Castilla-La Mancha Red Básica de Alta Capacidad "Denominación" column "Denominación" column (Castilla-La Mancha, Spain) CM-X
Red Básica CM-X road (Castilla-La Mancha, Spain)
Red Comarcal
Red Local
Red Local (ramales)
Red provincial Albacete "Denominación" column AB-X road (Albacete, Spain) AB-X
Ciudad Real "Denominación" column CR-X road (Ciudad Real, Spain) CR-X
Cuenca CUV-X road (Cuenca, Spain) CUV-X
Guadalajara GU-X road (Guadalajara, Spain) GU-X
Toledo TO-X road (Toledo, Spain) TO-X
Castilla y León
Cataluña
Comunidad Valenciana
Extremadura
Galicia
La Rioja
Comunidad de Madrid
Región de Murcia
Comunidad Foral de Navarra
País Vasco

Notes

  1. ^ a b The state name must be added where the route number is repeated in multiple locations. If the segments cover multiple states, use only the terminal state names separated by an en dash (–). In these cases, "Interstate X" should be used as a disambiguation page.
  2. ^ TxDOT uses "IH X" internally, but for consistency, we've standardized on "I-X" to match the other states.
  3. ^ For Alaska, use A-X. For Hawaii, use H-X. For Puerto Rico, use PRI-X.
  4. ^ The official AASHTO route logs and documents refer to these highways as "U.S. Route X" while "United States Highway" appears as the heading for each route in the 1989 log, United States Numbered Highways. The term "U.S. Highway X" is used by many state DOTs, and may be used in article prose where this nomenclature is prevalent.
  5. ^ a b c d e f g Hyphenation varies by state at this time
  6. ^ Named highways are at <name of road> Highway.
  7. ^ American Samoa uses four-digit numbers, padding them with the necessary zeros.
  8. ^ Replace <division> with County, District, Municipal, or Regional as required.
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