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Research draft

electric multiple unit

vr.tr.electric-multiple-unit · PHY.OBJ

Let an agent handle electric multiple units by class, operator, route, accessibility and technical features.

Thing Registry Physical world and living systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent handle electric multiple units by class, operator, route, accessibility and technical features.

A train consisting of self-propelled carriages powered by electricity from overhead lines or a third rail, with motors distributed along the train rather than a separate locomotive, used for commuter, regional, metro and high-speed services.

What it is for: Electric passenger rail services.

It can be identify EMU classes and operators; check accessibility features; find technical specifications; follow heritage and preserved units.

Distinguishing features

Distributed traction

Electric supply from infrastructure

Fast acceleration

Common on commuter networks

What it looks like

Multi-car trains with pantographs or third-rail shoes and cabs at both ends.

How it is recognised

Class or series numbers

Pantographs on the roof

Locomotive-hauled trains have a separate power unit

Related models

is a kind of - category

multiple unit and electric vehicle

is powered by - supply

railway electrification

runs on - infrastructure

railway line

is contrasted with - related

diesel multiple unit

In practice

Families and kinds

commuter EMUs

regional EMUs

metro trains

high-speed EMUs

battery EMUs (hybrid)

Identifiers

class or series number operator scheme fleet

Standards and regulation

EU Technical Specifications for Interoperability

TSI PRM accessibility requirements

Failure modes and hazards

Electrical hazards near overhead lines

Platform-train gap accidents

Also called

Osaka Municipal Transportation Bureau 200 seriesHiroshima Rapid Transit 7000 seriesInterCity+Renfe Class 801Stadler GTW 2/8ÖBB 4734/4736DBAG Class 481E4 Series ShinkansenE1 Series Shinkansenbattery electric multiple unitStadler RS ZeroBombardier Talent 3Bo′Bo′Bo′Bo′SNCF TGV POSSNCF Class U 25500 of TransilienDB Class 406Athens Metro 2nd Generation trains (AC/DC)ET 2010SNCF TGV 2N2TRA EMU800FS Class ETR.421FS Class ETR.521FS Class ETR.621TN Class ETR.522CRRC DDEMU2SL Stadler X15pHitachi CaravaggioWLB series 500Firema E 84Alstom MRP 236Nagaden 3000 seriesToei 6500 seriesCP 3400 SeriesSuperVia 3000 seriesCPTM Série 2000CPTM 7000 seriesCPTM 8000 seriesCPTM 5000 seriesCPTM 4800 seriesRFFSA 700 series

+1960

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Identity Which unit.

Classes identify.

Class

Series.

Class

Class.

  1. Which class or series is it, and who built it? provenance
  2. Which operator runs it? provenance

Routes

Services.

Routes

Routes.

  1. On which routes does it operate? provenance
  2. Is it still in service? provenance
Technical Specifications.

Specifications matter.

Power

Supply.

Power

Power supply.

  1. Which voltage and current system does it use? definition
  2. What is its maximum speed? measurement

Capacity

Seats.

Capacity

Capacity.

  1. How many seats and standing places does it have? measurement
  2. How many cars? measurement
Passengers Accessibility.

Access matters.

Access

Step-free.

Access

Accessibility.

  1. Does it offer level boarding and wheelchair spaces? provenance
  2. How can assistance be booked? action

Facilities

On board.

Facilities

Facilities.

  1. Are there toilets, power sockets and information screens? provenance
  2. Is there Wi-Fi? provenance
Safety Electric railway.

Electric railways are dangerous.

Electric

Overhead lines.

Electric

Electrical safety.

  1. What safety rules apply near overhead lines and third rails? provenance
  2. Why must people never climb on trains? definition

Heritage

Preserved units.

Heritage

Preserved units.

  1. Are any units preserved? provenance
  2. Where can they be seen? provenance

What the second pass must settle

  • Should each class be a separate entry?
  • How should fleet data be linked?
  • How should preserved units be handled?
Draft as JSON