Indian broad gauge
E458445
Indian broad gauge is the standard, wider-than-average railway track gauge predominantly used across India’s rail network, enabling high-capacity and heavy-haul train operations.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Indian Railways broad-gauge network | 4 |
| Indian broad gauge canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4614886 — 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: Indian broad gauge Context triple: [Indian Railways, trackGauge, Indian broad gauge]
-
A.
Central Railway
Central Railway is one of the major zones of Indian Railways, headquartered in Mumbai and responsible for operating key rail routes and suburban services in western and central India.
-
B.
Delhi–Kolkata rail corridor
The Delhi–Kolkata rail corridor is one of India’s busiest and most important railway routes, linking the national capital with the eastern metropolis through major northern and eastern cities.
-
C.
Indian Railways
Indian Railways is India’s state-owned national railway system, operating one of the world’s largest rail networks for passenger and freight transport across the country.
-
D.
Eastern Railway
Eastern Railway is one of the major zones of Indian Railways, operating extensive rail services primarily across eastern India.
-
E.
Gwalior Light Railway
Gwalior Light Railway is a historic narrow-gauge railway network in central India, originally built to serve the princely state of Gwalior and noted for its extensive rural reach and heritage value.
- 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: Indian broad gauge Target entity description: Indian broad gauge is the standard, wider-than-average railway track gauge predominantly used across India’s rail network, enabling high-capacity and heavy-haul train operations.
-
A.
Central Railway
Central Railway is one of the major zones of Indian Railways, headquartered in Mumbai and responsible for operating key rail routes and suburban services in western and central India.
-
B.
Delhi–Kolkata rail corridor
The Delhi–Kolkata rail corridor is one of India’s busiest and most important railway routes, linking the national capital with the eastern metropolis through major northern and eastern cities.
-
C.
Indian Railways
Indian Railways is India’s state-owned national railway system, operating one of the world’s largest rail networks for passenger and freight transport across the country.
-
D.
Eastern Railway
Eastern Railway is one of the major zones of Indian Railways, operating extensive rail services primarily across eastern India.
-
E.
Gwalior Light Railway
Gwalior Light Railway is a historic narrow-gauge railway network in central India, originally built to serve the princely state of Gwalior and noted for its extensive rural reach and heritage value.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
rail infrastructure standard
ⓘ
railway track gauge ⓘ |
| administeredBy | Indian Railways NERFINISHED ⓘ |
| allows |
higher axle loads
ⓘ
higher passenger capacity per train ⓘ wider rolling stock ⓘ |
| alsoKnownAs | 5 ft 6 in gauge ⓘ |
| alsoUsedIn |
Bangladesh
NERFINISHED
ⓘ
Pakistan NERFINISHED ⓘ Sri Lanka NERFINISHED ⓘ |
| compatibleWith | broad-gauge rolling stock of 1676 mm ⓘ |
| conversionProgram | Project Unigauge NERFINISHED ⓘ |
| countryUsedIn | India NERFINISHED ⓘ |
| designOptimizedFor | mixed-traffic operations ⓘ |
| electrificationCompatibleWith | 25 kV AC overhead systems ⓘ |
| enables |
heavy-haul train operations
ⓘ
high-capacity train operations ⓘ |
| gaugeCategory | broad gauge ⓘ |
| gaugeWidth |
1676 mm
ⓘ
5 ft 6 in ⓘ |
| governingBody | Ministry of Railways, Government of India NERFINISHED ⓘ |
| historicalOrigin | British colonial railway construction in India ⓘ |
| infrastructureElements |
ballast
ⓘ
fastenings ⓘ rails ⓘ sleepers ⓘ |
| isPredominantGaugeOf | Indian Railways network NERFINISHED ⓘ |
| isStandardGaugeOf | Indian Railways NERFINISHED ⓘ |
| notCompatibleWith |
metre gauge 1000 mm without gauge change
ⓘ
standard gauge 1435 mm without gauge change ⓘ |
| predominantGaugeIn | India NERFINISHED ⓘ |
| regionOfDominance | Indian subcontinent NERFINISHED ⓘ |
| replaced |
many metre-gauge lines in India
ⓘ
many narrow-gauge lines in India ⓘ |
| safetyCharacteristic | good lateral stability at high speeds ⓘ |
| supports |
diesel traction
ⓘ
electric traction ⓘ heavy mineral freight trains ⓘ long-distance express trains ⓘ suburban commuter trains ⓘ |
| trackCenterDistanceTypical | about 4.265 m (varies by standard) ⓘ |
| trackGaugeType | non-standard worldwide but standard in India ⓘ |
| trackStability | high ⓘ |
| usedFor |
freight rail transport
ⓘ
passenger rail transport ⓘ |
| usedOn |
most high-density freight corridors in India
ⓘ
most intercity passenger corridors in India ⓘ most main lines in India ⓘ |
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: Indian broad gauge Description of subject: Indian broad gauge is the standard, wider-than-average railway track gauge predominantly used across India’s rail network, enabling high-capacity and heavy-haul train operations.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Indian Railways broad-gauge network
this entity surface form:
Indian Railways broad-gauge network
this entity surface form:
Indian Railways broad-gauge network
this entity surface form:
Indian Railways broad-gauge network