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fourth rail

type of electricity transmission for railways, resulting in two rails carrying the weight and two additional rails conducting electricity
Thing type_of_electricity_transmission Q109180474
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fourth rail

Summary

fourth rail is a type of electricity transmission[1]. It draws 19 Wikipedia views per month (type_of_electricity_transmission category, ranking #4 of 4).[2]

Key Facts

  • fourth rail's image is recorded as Amersham tube station 2.jpg[3].
  • fourth rail's image is recorded as Arcing pickup shoe.jpg[4].
  • fourth rail's instance of is recorded as type of electricity transmission[5].
  • fourth rail's instance of is recorded as interface standard[6].
  • fourth rail's subclass of is recorded as rail infrastructure[7].
  • fourth rail's OpenStreetMap tag is recorded as electrified=4th_rail[8].
  • fourth rail's used by is recorded as London Underground[9].
  • fourth rail's used by is recorded as Milan Metro[10].
  • fourth rail's different from is recorded as third rail[11].
  • fourth rail's connects with is recorded as pickup shoe[12].

Why It Matters

fourth rail draws 19 Wikipedia views per month (type_of_electricity_transmission category, ranking #4 of 4).[2]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). fourth rail. Retrieved May 3, 2026, from https://4ort.xyz/entity/fourth-rail
MLA “fourth rail.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/fourth-rail.
BibTeX @misc{4ortxyz_fourth-rail_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{fourth rail}}, year = {2026}, url = {https://4ort.xyz/entity/fourth-rail}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): fourth rail — https://4ort.xyz/entity/fourth-rail (retrieved 2026-05-03)

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