For starters, what is the definition of a Metro? BrizCommuter's preferred definition is from the excellent metro website http://www.urbanrail.net:
- An urban electric mass rail transport system, i.e. it is primarily used to move within the city.
- Totally independent from other traffic, rail or street traffic.
- High frequency service (maximum interval approx. 10 minutes during normal daytime service.)
There are a wide range of different types of Metro system, as below:
- Underground, surface, or elevated tracks.
- Trains varying from 13m to 250m in length, and 2m to 3.2m in width.
- Trains varying from light weight (e.g. London's DLR), to double deck trains (e.g. Paris RER).
- Steel wheel (most common), linear motor or rubber-tyre (for steeper gradients or tight bends), or (extremely rarely) MAGLEV.
- Self-contained running (e.g Paris Metro), or part of wider suburban rail network (e.g. Paris RER, most Tokyo Metro lines, London's Crossrail).
- Frequencies between 85secs (or even shorter on some mini metros) to 12 minutes (looking at you Los Angeles).
So will the core section of Cross River Rail be a Metro system?
- Underground tracks - tick!
- Grade separated on core section - tick!
- "Heavy rail" suburban trains - tick (though with slow boarding due to only two sets of doors per car side, similar to San Francisco's BART.)
- Steel wheel - tick!
- Part of wider suburban rail network - tick (as per Tokyo, Paris RER, and London's Crossrail.)
- Frequency - ?? (see below.)
|Cross River Rail station|
Could other parts of Queensland Rail's (QR) rain network be counted as a Metro? Many parts of the QR CityTrain network have a 10 minutes or better Metro-like frequency throughout most of the am peak (Springfield Line, Ipswich Line, Ferny Grove Line, Caboolture Line, Kippa-Ring Line, Northgate to City, inner Cleveland Line, South Bank area). However during the daytime off peak, pm peak, and evening, very little of QR's network has a consistent 10 minutes or better train service. Thus at the present, only 4 stations between Bowen Hills to Roma Street (inclusive) can be regarded as having a Metro-like service in Brisbane. With enough trains, crew, and funding, this could easily be expanded.
Getting back to the original question- as long as scheduling permits 10 minute off-peak frequencies or better through CRR (which is quite possible), then CRR could be classed as a Metro. Stick that in your pipe and smoke it Mr Quirk!