We should do it now otherwise it will cost more later I hear you say. The correct yardstick is its share of GDP otherwise we're blindsided by money illusion. Besides there are better choices. The first one is obviously to beef up the number and quality of buses -- fitting a number of them with catalytic converters will also improve air quality -- on our roads. And improving their schedules. Plus letting congestion pricing do a little bit of its magic. After making cars more expensive. Especially the larger ones. While making the smaller hybrid ones even cheaper. This should improve flow. And GDP. But not as much as restoring progressive taxation. Which should be the topmost priority.
Not sure whether a metro should run between Port-Louis and Curepipe. When it will be the right time to do it we might find it obvious to exclude these two cities.
