Monorails or for that matter most of the mass-transits have not been churning out profits. Japan is the only unique exception due to their much higher standards of living & people's higher affordability levels to pay fares. Thus monorails have been profitable there. In fact, monorail makers have been forced to cut manufacturing costs for systems & are offering to install & run their systems as there had been no takers. Some examples :
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to be developing a network that covers more areas and enables last mile connectivity and feeder services to be more effective. 
Also called reversible lanes. A reversible lane (called a counterflow lane or contraflow lane in transport engineering nomenclature) is a lane in which traffic may travel in either direction, depending on certain conditions.
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