The economies that have Trillion dollar profits , like Saudia or UK or Germany etc they can afford to invest in technology like Monorail or city based approaches.
For Pakistan the best approach is run "Train Service" in local cities infact Pakistan had a Circular Railway in Karachi before not many folks know about it
City wide Train Service example in Canada
Double Decker Train to take commuter to Down Town
Mono rail is just a cosmetic word with big price tag ... practical affordable solution is a "SAME train " system with new engines and double decker boggies
GO Train Canada carried
65 million passengers in 2012
GO Transit - Wikipedia, the free encyclopedia
Conclusion:
You can have a great platform for transporting Passengers daily with normal Train system as proven by Transit system in Canada with out Mono Rail price Tag
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Railways is ideal solution for Pakistan from
Cost prespective and available Man power in Pakistan
1.6 Billion would buy brand new units from USA : 800 Units
Inter City Travel Needs:
Pakistan Railways Passenger Operations : 600 Units
Pakistan Railways Freight Operation : 100 Units
Local City Transit Projects:
- 20 Locomotives Karachi
- 20 Locomotives Lahore
- 20 Locomotives Islamabad/Rawalpindi
- 20 Locomotives Pishawar
- 20 Locomotives Quetta
Commitment from Government of Pakistan : Create the rail roads inner city areas