Tobu ATS
E532684
Tobu ATS is an automatic train stop safety system used on Tobu Railway lines in Japan to prevent collisions and signal overruns.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tobu ATS canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T5548547 — 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: Tobu ATS Context triple: [Tobu 50050 series, safetySystem, Tobu ATS]
-
A.
Tobu 9000 series
The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan area.
-
B.
Tobu 50050 series
The Tobu 50050 series is a Japanese electric multiple unit train operated by Tobu Railway, designed for through-services with Tokyo Metro and known for its modern commuter-oriented features.
-
C.
Tobu Railway
Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
-
D.
Hanshin ATS
Hanshin ATS is an automatic train protection system used on Japan’s Hanshin Electric Railway to ensure safe train operations by enforcing speed limits and signal compliance.
-
E.
Kintetsu ATS
Kintetsu ATS is an automatic train protection system used by Kintetsu Railway in Japan to enhance operational safety by enforcing speed limits and signal compliance.
- 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: Tobu ATS Target entity description: Tobu ATS is an automatic train stop safety system used on Tobu Railway lines in Japan to prevent collisions and signal overruns.
-
A.
Tobu 9000 series
The Tobu 9000 series is a Japanese electric multiple unit train type operated by Tobu Railway, commonly used for inter-running services with Tokyo Metro lines in the Tokyo metropolitan area.
-
B.
Tobu 50050 series
The Tobu 50050 series is a Japanese electric multiple unit train operated by Tobu Railway, designed for through-services with Tokyo Metro and known for its modern commuter-oriented features.
-
C.
Tobu Railway
Tobu Railway is a major private railway company in Japan that operates extensive rail networks in the Greater Tokyo area and surrounding regions.
-
D.
Hanshin ATS
Hanshin ATS is an automatic train protection system used on Japan’s Hanshin Electric Railway to ensure safe train operations by enforcing speed limits and signal compliance.
-
E.
Kintetsu ATS
Kintetsu ATS is an automatic train protection system used by Kintetsu Railway in Japan to enhance operational safety by enforcing speed limits and signal compliance.
- F. None of above. chosen
Statements (24)
| Predicate | Object |
|---|---|
| instanceOf |
automatic train stop system
ⓘ
train protection system ⓘ |
| appliesTo | trains operating on Tobu Railway ⓘ |
| basedOn |
onboard train equipment
ⓘ
trackside equipment ⓘ |
| country | Japan ⓘ |
| hasEffect |
reducing risk of rear-end collisions
ⓘ
reducing risk of side collisions ⓘ stopping trains that pass danger signals ⓘ |
| implementedBy |
Tobu Railway technical department
ⓘ
linked to:
Tobu Railway
|
| industry | rail transport ⓘ |
| locatedInJurisdiction | Japan ⓘ |
| operator | Tobu Railway ⓘ |
| partOf | Tobu Railway signalling system ⓘ |
| purpose |
prevention of signal overruns
ⓘ
prevention of train collisions ⓘ |
| railwayLineUsedOn | Tobu Railway lines ⓘ |
| regulates |
train movement authority
ⓘ
train speed relative to signals ⓘ |
| safetyCritical | true ⓘ |
| safetyFunction | automatic train stop ⓘ |
| usedFor | train operation safety ⓘ |
| usedIn |
commuter rail services
ⓘ
interurban rail services ⓘ |
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: Tobu ATS Description of subject: Tobu ATS is an automatic train stop safety system used on Tobu Railway lines in Japan to prevent collisions and signal overruns.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.