North American loading gauge
E702603
The North American loading gauge is the standard set of maximum height and width dimensions that railway vehicles and loads must conform to in order to safely operate on North American rail networks.
All labels observed (1)
| Label | Occurrences |
|---|---|
| North American loading gauge canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T7972931 — 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: North American loading gauge Context triple: [Genesis locomotives, designedFor, North American loading gauge]
-
A.
Pennsylvania trolley gauge
The Pennsylvania trolley gauge is a non-standard, wider-than-standard track gauge historically used by many streetcar and trolley systems in Pennsylvania, notably in the Philadelphia area.
-
B.
The Standard Railroad of the World
The Standard Railroad of the World was the proud slogan and nickname of the Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
C.
Pan Handle Railway
The Pan Handle Railway was a 19th-century American railroad whose lines later became part of the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad system.
-
D.
Zapata rail
The Zapata rail is a rare, elusive rail species of marsh bird found only in Cuba’s Ciénaga de Zapata wetlands and considered one of the country’s most threatened endemic birds.
-
E.
Guilford Rail System
Guilford Rail System was a major New England-based freight railroad company that consolidated several regional railroads under common ownership before rebranding as Pan Am Railways.
- 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: North American loading gauge Target entity description: The North American loading gauge is the standard set of maximum height and width dimensions that railway vehicles and loads must conform to in order to safely operate on North American rail networks.
-
A.
Pennsylvania trolley gauge
The Pennsylvania trolley gauge is a non-standard, wider-than-standard track gauge historically used by many streetcar and trolley systems in Pennsylvania, notably in the Philadelphia area.
-
B.
The Standard Railroad of the World
The Standard Railroad of the World was the proud slogan and nickname of the Pennsylvania Railroad, once one of the largest and most influential railroads in the United States.
-
C.
Pan Handle Railway
The Pan Handle Railway was a 19th-century American railroad whose lines later became part of the Pittsburgh, Cincinnati, Chicago and St. Louis Railroad system.
-
D.
Zapata rail
The Zapata rail is a rare, elusive rail species of marsh bird found only in Cuba’s Ciénaga de Zapata wetlands and considered one of the country’s most threatened endemic birds.
-
E.
Guilford Rail System
Guilford Rail System was a major New England-based freight railroad company that consolidated several regional railroads under common ownership before rebranding as Pan Am Railways.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
rail transport standard
ⓘ
railway loading gauge ⓘ |
| accountsFor |
curvature effects on vehicle clearance
ⓘ
vehicle sway and track tolerances ⓘ |
| appliesTo | North American rail networks NERFINISHED ⓘ |
| basisFor |
clearance testing procedures
ⓘ
railcar design standards in North America ⓘ |
| broaderThan |
British loading gauge
ⓘ
many European loading gauges ⓘ |
| constrains |
auto rack car dimensions
ⓘ
double-stack container train dimensions ⓘ high-cube boxcar dimensions ⓘ maximum overhang of loads ⓘ out-of-gauge load movements ⓘ |
| defines |
maximum dimensions of railway loads
ⓘ
maximum height of railway vehicles ⓘ maximum width of railway vehicles ⓘ |
| dimensionType |
dynamic envelope
ⓘ
static envelope ⓘ |
| ensuresCompatibilityWith | multiple North American railroads ⓘ |
| hasVariation |
railroad-specific clearance plates
ⓘ
regional clearance diagrams ⓘ |
| influences |
bridge clearance design in North America
ⓘ
overhead line equipment clearances ⓘ platform clearance design in North America ⓘ tunnel design in North America ⓘ |
| purpose | to ensure safe clearance between trains and infrastructure ⓘ |
| regulates |
freight car dimensions
ⓘ
intermodal container clearances ⓘ passenger car dimensions ⓘ |
| relatedTo |
AAR Plate C
NERFINISHED
ⓘ
AAR Plate F NERFINISHED ⓘ Association of American Railroads NERFINISHED ⓘ railway safety regulation in North America ⓘ structure gauge ⓘ |
| requiresComplianceFrom |
passenger rail operators
ⓘ
rail freight operators ⓘ railway vehicle manufacturers ⓘ |
| safetyRole |
prevents contact with tunnels and bridges
ⓘ
prevents interference with adjacent tracks ⓘ prevents side-swipe collisions with lineside structures ⓘ |
| usedBy |
Class I railroads in North America
NERFINISHED
ⓘ
commuter rail systems in North America ⓘ intercity passenger rail services in North America ⓘ short line railroads in North America ⓘ |
| usedInCountry |
Canada
ⓘ
Mexico ⓘ United States of America ⓘ
surface form:
United States
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: North American loading gauge Description of subject: The North American loading gauge is the standard set of maximum height and width dimensions that railway vehicles and loads must conform to in order to safely operate on North American rail networks.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.