Siemens SD-400
E852075
The Siemens SD-400 is a light rail vehicle model built by Siemens for use on systems such as the St. Louis MetroLink, featuring articulated, electrically powered cars designed for urban transit.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Siemens SD-400 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10279482 — 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: Siemens SD-400 Context triple: [Red Line (St. Louis MetroLink), usesRollingStock, Siemens SD-400]
-
A.
Siemens SD-160
The Siemens SD-160 is a high-floor light rail vehicle widely used in North American transit systems, including Calgary’s CTrain, known for its modular design and reliable urban service.
-
B.
Siemens SD100
The Siemens SD100 is a light rail vehicle model built by Siemens for use on urban trolley and light rail systems such as the San Diego Trolley.
-
C.
Siemens SD660
Siemens SD660 is a model of light rail vehicle built by Siemens for use in modern urban transit systems.
-
D.
Siemens DT3
Siemens DT3 is a type of electric multiple unit metro train used on Hamburg’s U-Bahn system.
-
E.
Siemens Avanto
Siemens Avanto is a family of light rail and tram-train vehicles developed by Siemens for urban and regional public transport 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: Siemens SD-400 Target entity description: The Siemens SD-400 is a light rail vehicle model built by Siemens for use on systems such as the St. Louis MetroLink, featuring articulated, electrically powered cars designed for urban transit.
-
A.
Siemens SD-160
The Siemens SD-160 is a high-floor light rail vehicle widely used in North American transit systems, including Calgary’s CTrain, known for its modular design and reliable urban service.
-
B.
Siemens SD100
The Siemens SD100 is a light rail vehicle model built by Siemens for use on urban trolley and light rail systems such as the San Diego Trolley.
-
C.
Siemens SD660
Siemens SD660 is a model of light rail vehicle built by Siemens for use in modern urban transit systems.
-
D.
Siemens DT3
Siemens DT3 is a type of electric multiple unit metro train used on Hamburg’s U-Bahn system.
-
E.
Siemens Avanto
Siemens Avanto is a family of light rail and tram-train vehicles developed by Siemens for urban and regional public transport systems.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf | light rail vehicle ⓘ |
| articulation | single articulation joint ⓘ |
| brakeSystem |
electric braking
ⓘ
pneumatic braking ⓘ |
| carBodyMaterial | steel ⓘ |
| controlType | multiple-unit control ⓘ |
| countryOfOperation |
United States of America
ⓘ
surface form:
United States
|
| coupling | can operate in multiple-car consists ⓘ |
| designedBy | Siemens Transportation Systems NERFINISHED ⓘ |
| designedFor |
frequent stop-and-go operation
ⓘ
light rail systems ⓘ urban transit ⓘ |
| doorConfiguration | multiple side doors for rapid boarding ⓘ |
| doorLocation | side doors along car length ⓘ |
| doorOperation | powered sliding doors ⓘ |
| electricSystem | 750 V DC ⓘ |
| enteredService | 1993 ⓘ |
| family | Siemens SD-series NERFINISHED ⓘ |
| floorType | high-floor ⓘ |
| introduced | early 1990s ⓘ |
| manufacturer |
Siemens
NERFINISHED
ⓘ
Siemens Mobility NERFINISHED ⓘ |
| numberOfSections | 2 ⓘ |
| operator |
Bi-State Development Agency
NERFINISHED
ⓘ
Metro Transit (St. Louis) NERFINISHED ⓘ |
| passengerAccess | high-platform boarding ⓘ |
| powerCollectionMethod | overhead catenary ⓘ |
| powerOutput | electric traction motors ⓘ |
| powerSupply | pantograph ⓘ |
| propulsion | electric ⓘ |
| region | North America light rail market ⓘ |
| safetyFeatures | automatic train protection compatible ⓘ |
| serviceMode | bidirectional ⓘ |
| serviceStatus | in revenue service (St. Louis MetroLink) ⓘ |
| similarTo | Siemens SD-460 NERFINISHED ⓘ |
| trackGauge |
1435 mm
ⓘ
standard gauge ⓘ |
| usedFor |
commuter travel
ⓘ
passenger transport ⓘ urban rail transit ⓘ |
| usedInCity | St. Louis NERFINISHED ⓘ |
| usedInMetroArea | St. Louis metropolitan area NERFINISHED ⓘ |
| usedInState | Missouri NERFINISHED ⓘ |
| usedOn |
MetroLink (St. Louis)
NERFINISHED
ⓘ
St. Louis MetroLink Blue Line NERFINISHED ⓘ St. Louis MetroLink Red Line NERFINISHED ⓘ |
| vehicleType | articulated railcar ⓘ |
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: Siemens SD-400 Description of subject: The Siemens SD-400 is a light rail vehicle model built by Siemens for use on systems such as the St. Louis MetroLink, featuring articulated, electrically powered cars designed for urban transit.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Red Line (St. Louis MetroLink)