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
- 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
- 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.
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
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
- 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
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)
- Siemens Optiguide (Matra Visee)
- guidance=magnetic
Rubber-tyred tram
- Translohr (can't travel on roads unlike Bombardier GLT)
Linear motor
linear_motor=induction + traction=linear_motor
Steel-on-steel
Rubber-tyred
Cable-propelled
- San Francisco cable car system
- Cable Liner
- MiniMetro: Could be air-cushioned, like the Otis Hovair
Skyrail Midorizaka Line detachable "gondola", LIM-proplled at stations}}(to be decommissioned)
Air-cushioned
Maglev
High-speed
linear_motor=synchronous + traction=linear_motor
- Chūō Shinkansen ( SCMaglev) EDS
- Shanghai maglev train ( Transrapid) EMS
Conventional-speed
linear_motor=induction + monorail:structure=straddle
- Linimo ( High Speed Surface Transport)
- 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
- Created
- running_rail=*
- rollway=*
- hover_pad=*
- monorail:structure=*
- guidance=*
- traction=*
- linear_motor=*
- maglev=*
- propulsion=*
- Modified
External discussions
Other proposals
- Proposed features/Magnetic levitation train
- 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
Wiki
Comments
Please comment on the discussion page.