double-deck trains

[rmwbris]

if EDI can build double deck trains in syd. why not in bris.
surely it is the same principle, raise the floor and add a lower deck between the axles
this would improve the overcrowding issue using current timetables

[ozbob]

Great idea RMW!!

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Ozbob

[ozbob]

Some interesting examples here --> http://www.railpage.com.au/f-p857208.htm
Some of them on narrow gauges too.

[mufreight]

Double deck trains would not be practical on QR narrow gauge as they would be restricted in operational speeds due a higher centre of gravity and designing such cars would be difficult due to the somewhat restrictive QR loading gauge, a problem that again surfaced with the air conditioner units fitted to the first deliveries of the latest batch of electrics.

[kwv]

QR had trouble with new single deck trains, so I would say they would have problems with double-deck trains?

[haakon]

One of the problems with Sydney and their double deck passenger trains is the increased dwell time for unloading and loading. It decreases the capacity of the line.

[O_128]

An extremelt easy idea could be to jsut extend trains to 9 carrriges and add a 3rd door on each carrige

[Arnz]

An extremelt easy idea could be to jsut extend trains to 9 carrriges and add a 3rd door on each carrige

The majority of QR owned stations in the Brisbane and SE QLD are of 6-car length.  The exceptions where there are 3-car length only platforms are at Tennyson, some stations north of Landsborough (Beerburrum is being upgraded to 6-car length), and most stations west of Ipswich.

Extending 6-car to 9-car (or 7-8 car for that matter requires extending every platform). So no it would not be easy and would be somewhat costly.

[Derwan]

I thought of this idea too - but rather than upgrading every station, there could be key stations that 9-car trains could stop at and then run express through other stations.

However, even this idea would require the upgrade of the city stations which may be difficult at best.

The other idea would be to have 3 cars with locked doors (e.g. first carriage and the last 2 carriages).  Those travelling some distance could move to one of these carriages and then back just before they get to their station.  But like double-deckers, this would potentially increase dwell times.

[mufreight]

Derwan, not only is there the platform length problem but major resignaling issues would arise particularly at junction points with the overlap of signaling blocks but it was a thought and unless these things are raised nothing would ever get done.

[stephenk]

A slightly less problematic way of increasing capacity would be to improve the signalling. Distance to go or moving block signalling could shave off 30secs platform reoccupation time at signalling bottleneck stations such as Roma St and Bowen Hills. This could add 4tph to the suburban lines, or another 3200 passengers. However it wouldn't come cheap! Hopefully the new tunnel(s) will solve the capacity issues anyway.