Individual,

The only true monorails are the suspended ones and they are very costly to construct, that's one reason why there are so few of them.

A true on top of the rail monorail, that is one without any guide wheels or other supports can be built using gyroscopes for stability but it must have some form of support when its motor(s) stop, otherwise it falls over.

Conventional rail is the answer, see:
http://en.wikipedia.org/wiki/Indian_Railways

"Indian Railways (reporting mark IR / भा. रे) is an Indian state-owned enterprise, owned and operated by the Government of India through the Ministry of Railways. It is one of the world's largest railway networks comprising 115,000 km (71,000 mi) of track over a route of 65,000 km (40,000 mi) and 7,500 stations. In 2011, IR carried over 8,900 million passengers annually or more than 24 million passengers daily (roughly half of which were suburban passengers) and 2.8 million tons of freight daily. In 2011–2012 Indian Railways had revenues of INR1119848.9 million (US$19 billion) which consists of INR696759.7 million (US$12 billion) from freight and INR286455.2 million (US$4.8 billion) from passengers tickets".

See also:http://www.indianrailways.gov.in/

is Mise,
So, because in madly overpopulated India they have a system from the 1800's Australia should not look outside the square ? I think Australia could become a leader in Mono rail construction if only they would do it without idiot shareholders demanding irresponsible returns before the first passenger boards the carriage.
A National Service could be involved to get the homeless off the streets.

If the future Bazz predicts comes to pass, public transport of any type will be something we peasants may be able to afford perhaps once a week if we are lucky.

With out the revenue from fuel excise/taxes & other motoring charges, the money will not be available to afford the huge subsidies required to make public transport viable, it will not be something someone uses to travel to work.

We have enough oil under the southern barrier reef to fuel us for a centaury, & will harvest it when the need becomes great enough. Meanwhile we can switch to gas reasonably easily, certainly more easily & cheaply than building new railway infrastructure. Hell we could even go electric, if we wake up to ourselves & go back to coal to generate the stuff.

Yes travel may become more expensive over time, but I doubt I'll see much change in my lifetime.

Hasbeen and others;
I think you are too pessimistic about the viability of railways.
Two reasons, the road network is heavily subsidised and rail has
nowhere near that level.
Secondly, there is not all that much construction needed to bring it
all up to UK standards. As far as the closed branch lines are
concerned the right of ways are mostly still intact.

In the US the railways are experiencing a surge of new business and
are profitable. At the same time trucks are losing business.
They have started installing CNG refueling stops along the main
highways to save on expensive diesel.
No doubt that will happen here also, provided they don't sell it all to China and Japan !

Rhosty has also mentioned oil under the Barrier Reef. I have never
seen any figures quoted and as far I can tell no drilling has been
done so is it just sysmic surveys ?
I wonder how accurate they can be.
A lot of these reports of "Huge deposits" often end up when divided
by 90 million turn out to be just a months supply for the world.
Anyway if we get desperate enough it will be drilled.

I agree Hasbeen we will not see the full impact but we are already
experiencing the first signs. $1.62 today. TAPIS $112 a barrel

Individual,

Time before last up in Mumbai there was a team from Sydney's City Raip learning a few things from the locals on how to run a city's railway.

Railways make their money from carrying freight there is ndt one freight carrying monorail in the world outside of manually operated ones inside factory complexes'

The thought of a monorail freight yard boggles the mind.

Here's another so-called monorail,
https://c1.staticflickr.com/9/8109/8506758843_6f8dc5775c_z.jpg

Sydney's City Raip learning a few things from the locals on how to run a city's railway.
is Mise,
Well, that's like saying Mumbay laundries vs a laundromat in Sydney. The Indians have perfected the system of not losing track of what belongs to whom. A Sydney Laundry with that many customes would lose track in less than 5 minutes.
If India were to put as much value on a human life as we are forced to do in Australia then India would go broke in half a day. Can you envisage the train from Circular Quay to Parramatta having people hanging off the carriages like grapes ?
A Mono rail could be used for anything from passengers to freight. I don't know what makes you think it wouldn't work, perhaps you're a shareholder & can't wait for a return. I'm thinking along the lines of environmental impact & social benefits from an Australia wide network that can be built over the next few decades, creating many jobs along the way. Just keep the shareholders out of the project & all will go well & end up well. I for one would not be so silly as to expect such a network up & running within a year / It'd be a long-term investment with our descendents benefitting & also the environment. You need to stop thinking the Leftie way of "I want it now".