Proposal:Unconventional railway details

Unconvetional railway and guided busway details
Proposal status:	Draft (under way)
Proposed by:	Kovposch
Applies to:
Definition:	Unconvetional railway and guided busway details
Draft started:	2020-09-30

Proposal

Details of unconventional railways and guided busways, for their supporting mechanism, structure, guidance, traction, and propulsion.

Rationale

• Some defining attributes are missing from mostly railway=subway , which is already used for rubber-tyred or linear motor metro. These affects their profile, performance, and service greatly.
• railway=monorail mixes up different aspect in monorail=*, as well as conflicts with the monorail=yes meaning in Public Transport. It is misused for rubber-tyred guideways that don't have a single rail. Some maglevs are not monorails either, as tagged by monorail=maglev.
• railway=light_rail has already been used by some for systems that are not steel wheel heavy rail.
• railway=maglev is not adopted. As previously discussed, it's too specific and limited in scope.
• highway=bus_guideway doesn't describe optical and magnetic guided bus yet.

Tagging

It is proposed to tag railway=* by its function as is normally, only using railway=monorail for the substantially different monorail. Pragmatically, this would conform to current practice, and maintain compatability. Conceptually, this would allow railways to be distinguished by function, instead of form.

The proprietary system itself might be shown as model=* and manufacturer=* or equivalent.

Support

A vehicle may use multiple form of support. This is especially complicated for the Paris-style "rubber-tyred" metro that uses steel wheels as well. SCMaglev on Chuo Shinkansen is an EDS maglev system, where rubber tyres are also used below levitation speed. Thus this necessitates handling multiple form of support from the onset.

• running_rail=yes: there is a (steel) running rail here, implies steel wheels
• rollway=*: running pad / roll-way for rubber tyres, imples rubber wheels
  • rollway=pad: an additional piece of slab/plate on the supporting structure
    • rollway:pad:material=*
      • rollway:pad:material=concrete
      • rollway:pad:material=steel
    • rollway:pad:structure=*
      • rollway:pad:structure=plate
      • rollway:pad:structure=rail
  • rollway=structure: supporting structure directly used, as in monorail
  • rollway=roadway: Rubber-tyred tram running on roadway.
  • rollway=guide_rail: The vehicle runs on top of the guide bar (viz Cable Liner)
• maglev=*: monorail=maglev will be treated as maglev=electromagnetic_rail
  • maglev=electromagnetic_suspension: EMS (static magnetic field)
  • maglev=electrodynamic_suspension: EDS (varying magnetic field)
  • maglev:primary=*: Primary side of magnet system
    • maglev:primary=vehicle
    • maglev:primary=track
• hover_pad=yes Otis Hovair hovertrain lift pad

Structure

• monorail:structure=*: Other monorail=* values will be directed here, allowing different attributes of a monorail to be distinguished. This also cleans up the synonymity of monorail=* in PT and infrastructure.
  • monorail=girder --> monorail:structure=straddle
  • monorail=hanging --> monorail:structure=suspension

Guidance

• guidance=*

Rubber-tyred guideway

• guidance=contact
  • running_rail=* as above (including Cable Liner, where the metal guide wheels run below the rubber-tyred wheels?)
  • guide_rail=* = guide_rail=side: a dedicated guide bar (may be applicable to guided bus routes)
  • guide_rail=centre needs to be introduced

Maglev

• guidance=maglev : The levitation system is used for guidance
• guidance=guidance_electromagnet (TBD) : A dedicated electromagnet is used

Guided bus

• guidance=contact the term "guideway" is not preferred for its ambiguity
  • guide_rail=* as above
  • Standard kerb=* tagging may be used for kerb guidance
• guidance=magnetic
• guidance=optical

Traction

Not to be confused with "propulsion".

• traction=*
  • traction=adhesion rotary motor or engine on vehicle only (Include propulsion=rack here?}}
  • traction=linear_motor used on not only maglev
  • traction=cable
  • traction=rack

For multiple traction methods on different sections (eg Skyrail), change the tag according to the propulsion the vehicle use at the section, not whether the propulsion mechanism exists through it?

Linear motor

• linear_motor=*
  • linear_motor=induction (may be implied by highspeed=no)
  • linear_motor=synchronous (may be implied by highspeed=yes)
• linear_motor:primary=*: Location of primary side windings/coil
  • linear_motor:primary=track: on the track (most high-speed maglevs)
  • linear_motor:primary=vehicle: on the vehicle (most low-speed maglev, most steel-on-steel linear motor)

Rack

Follow Key:rack.

Propulsion

Motive power source

Open-question as in Proposed_features/Unconvetional_railway_details#Applies to

• propulsion=*
  • propulsion=linear_motor (overlaps with traction)
  • propulsion=rotary_motor : Can confirm a train on electrified=no is electric-driven (To-do: diesel-electric, electro-diesel; refer to power=generator)

Examples

For brevity, please refer to Wikipedia for lines constructed of that system. model=* and manufacturer=* or equivalent can be added if applies.

Rubber-tyred "guideway"

rollway=pad + traction=adhesion

• guide_rail=left / guide_rail=right
  • Crystal Mover
• guide_rail=both
  • Véhicule Automatique Léger#Original_VAL (original version)
  • Port Island Line
• guide_rail=centre
  • Bombardier Innovia APM
  • Sapporo Municipal Subway
  • Véhicule Automatique Léger#NeoVal (Cityval, AirVal): new version
  • VONA (Yukarigaoka Line)

What may be branded as magnetic or optically guided "tram" should not be tagged as railway=tram. The difference between a rubber-tyred tramway and guided busway may be decided on whether the vehicle can move normally off rail. As such Translohr most definitely would be railway=tram, while Bombardier Guided Light Transit is likely to be classified as a guided busway.

Steel and rubber hybrid

• Paris metro
  • running_rail=yes
  • rollway=pad
  • guide_rail=left / guide_rail=right
  • traction=adhesion

Guided bus

• guidance=optical
  • Siemens Optiguide (Matra Visee)
    • Transport Est-Ouest Rouennais (TEOR)
    • Línea 1 (TRAM de Castellón) (trolleybus)
    • Ligne T1 du bus à haut niveau de service de Nîmes (note the marking on the cover photo)
  • Autonomous Rail Rapid Transit (ARRT)
• guidance=magnetic
  • Phileas (public transport)
  • Emerald Express

Rubber-tyred tram

• Translohr (can't travel on roads unlike Bombardier GLT)
  • rollway=roadway
  • guide_rail=centre

Linear motor

linear_motor=induction + traction=linear_motor

Steel-on-steel

running_rail=yes

• Bombardier Innovia Metro
• Linear_motor#Japanese_Linear_Metro

Rubber-tyred

• Moscow Monorail
  • rollway=structure
  • monorail:structure=straddle

Cable-propelled

traction=cable

• San Francisco cable car system
  • running_rail=yes
• Cable Liner
  • rollway=guide_rail
  • guide_rail=both
• MiniMetro: Could be air-cushioned, like the Otis Hovair
• Skyrail Midorizaka Line detachable "gondola", LIM-proplled at stations}} (to be decommissioned)

Air-cushioned

hover_pad=yes

• Otis Hovair

Maglev

High-speed

linear_motor=synchronous + traction=linear_motor

• Chūō Shinkansen (SCMaglev) EDS
  • maglev=electromagnetic_suspension
  • rollway=pad
• Shanghai maglev train (Transrapid) EMS
  • maglev=electromagnetic_suspension
  • guidance=guidance_electromagnet
  • monorail:structure=straddle

Conventional-speed

linear_motor=induction + monorail:structure=straddle

• Linimo (High Speed Surface Transport)
  • guidance=maglev
• Incheon Airport Maglev (Unidentified)

Applies to

However, need to consider how to assign properties between railway=* (infrastructure) and route=* (on board the train)

Rendering

No change, or a variation on existing style.

Features/Pages affected

• Deprecated

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light_rail=rubber_tyres

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More details at taginfo

More details at taginfo

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• Created
  • running_rail=*
  • rollway=*
  • hover_pad=*
  • monorail:structure=*
  • guidance=*
  • traction=*
  • linear_motor=*
    • linear_motor:primary=*
  • maglev=*
    • maglev:primary=*
  • propulsion=*

• Modified
  • railway=monorail
    • monorail=*
  • railway=rail
  • railway=subway
  • railway=tram
  • railway=light_rail
  • highway=bus_guideway

External discussions

Other proposals

• Proposed features/Magnetic levitation train
  • Fails as railway=maglev is too specific
• Proposed features/Incline railway
  • railway=funicular from Proposed features/Funicular railway is "de facto" per Tag:railway=funicular
• Proposed features/Rack railway
  • rack=*
• Proposed features/Key:bus guideway
  • bus_guideway=* risks creating self-conflicting values to the physical contact definition of highway=bus_guideway.
• Proposed features/Tag:highway=busway Frankly no idea on how to interface yet.

Changesets

• 126707946 (Morgantown PRT)

Wiki

• Talk:Tag:railway=monorail#Why is the ULTra Personal Rapid Transit at Heathrow a monorail?

Comments

Please comment on the discussion page.