AASHTO U.S. Route Numbering and Sign Policy

E21995

AASHTO policy document highway numbering policy transportation standard

The AASHTO U.S. Route Numbering and Sign Policy is the official guideline issued by the American Association of State Highway and Transportation Officials that defines how U.S. numbered highways are designated, numbered, and signed across the national network.

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All labels observed (1)

Label	Occurrences
AASHTO U.S. Route Numbering and Sign Policy canonical	1

How this entity was disambiguated

This entity first appeared as the object of triple T173901 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: AASHTO U.S. Route Numbering and Sign Policy
Context triple: [United States Numbered Highway System, governingDocument, AASHTO U.S. Route Numbering and Sign Policy]

A. AASHTO Special Committee on U.S. Route Numbering
The AASHTO Special Committee on U.S. Route Numbering is the body within the American Association of State Highway and Transportation Officials responsible for reviewing, approving, and maintaining the official numbering and routing of U.S. Highways.
B. American Association of State Highway and Transportation Officials
The American Association of State Highway and Transportation Officials (AASHTO) is a nonprofit, nonpartisan standards-setting and policy organization representing state departments of transportation across the United States.
C. United States Numbered Highway System
The United States Numbered Highway System is a nationwide network of primary and auxiliary highways established in 1926 to standardize and organize major intercity road travel across the country.
D. United States Numbered Bicycle Route System
The United States Numbered Bicycle Route System is a developing national network of officially designated, long-distance cycling routes that connect states and regions across the country.
E. Federal Highway Administration
The Federal Highway Administration is a U.S. government agency responsible for supporting the construction, maintenance, and safety of the nation’s highway and road systems.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: AASHTO U.S. Route Numbering and Sign Policy
Target entity description: The AASHTO U.S. Route Numbering and Sign Policy is the official guideline issued by the American Association of State Highway and Transportation Officials that defines how U.S. numbered highways are designated, numbered, and signed across the national network.

A. AASHTO Special Committee on U.S. Route Numbering
The AASHTO Special Committee on U.S. Route Numbering is the body within the American Association of State Highway and Transportation Officials responsible for reviewing, approving, and maintaining the official numbering and routing of U.S. Highways.
B. American Association of State Highway and Transportation Officials
The American Association of State Highway and Transportation Officials (AASHTO) is a nonprofit, nonpartisan standards-setting and policy organization representing state departments of transportation across the United States.
C. United States Numbered Highway System
The United States Numbered Highway System is a nationwide network of primary and auxiliary highways established in 1926 to standardize and organize major intercity road travel across the country.
D. United States Numbered Bicycle Route System
The United States Numbered Bicycle Route System is a developing national network of officially designated, long-distance cycling routes that connect states and regions across the country.
E. Federal Highway Administration
The Federal Highway Administration is a U.S. government agency responsible for supporting the construction, maintenance, and safety of the nation’s highway and road systems.
F. None of above. chosen

Statements (42)

Predicate	Object
instanceOf	AASHTO policy document ⓘ highway numbering policy ⓘ transportation standard ⓘ
aimsTo	coordinate interstate route planning among states ⓘ reduce confusion in U.S. Route designations ⓘ standardize U.S. Route numbering ⓘ
appliesTo	United States Numbered Highway System ⓘ
basedOn	grid-based numbering principles ⓘ
concerns	consistency of U.S. Route numbering nationwide ⓘ driver wayfinding on the U.S. numbered highway system ⓘ legibility of U.S. Route signs ⓘ
defines	U.S. Route designation procedures ⓘ U.S. Route numbering conventions ⓘ U.S. Route signing practices ⓘ
documentType	guideline ⓘ technical policy ⓘ
governs	assignment of new U.S. Route numbers ⓘ deletion of U.S. Routes ⓘ modification of existing U.S. Route alignments ⓘ signing of U.S. Route shields ⓘ use of directional banners on U.S. Routes ⓘ
implementedBy	state highway agencies ⓘ
issuedBy	American Association of State Highway and Transportation Officials ⓘ
jurisdiction	United States of America ⓘ surface form: United States
language	English ⓘ
prohibits	confusing or overlapping route designations ⓘ unnecessary duplication of U.S. Route numbers within a state ⓘ
relatedTo	AASHTO Special Committee on U.S. Route Numbering ⓘ Manual on Uniform Traffic Control Devices ⓘ
requires	AASHTO approval for U.S. Route deletions ⓘ AASHTO approval for U.S. Route relocations ⓘ AASHTO approval for new U.S. Route designations ⓘ
scope	national U.S. numbered highway network ⓘ
specifies	even numbers for generally east–west U.S. Routes ⓘ higher route numbers in the north and east ⓘ lower route numbers in the south and west ⓘ main route number as last two digits of three-digit U.S. Routes ⓘ odd numbers for generally north–south U.S. Routes ⓘ three-digit U.S. Routes as branches or spurs of main two-digit routes ⓘ
updatedBy	AASHTO Special Committee on U.S. Route Numbering ⓘ surface form: AASHTO committees
usedBy	AASHTO Special Committee on U.S. Route Numbering ⓘ state departments of transportation ⓘ

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

United States Numbered Highway System → governingDocument → AASHTO U.S. Route Numbering and Sign Policy ⓘ

All labels observed (1)

How this entity was disambiguated Show

Statements (42)

How these facts were elicited Show

Referenced by (1)

How this entity was disambiguated

How these facts were elicited