Does light rail have any advantage over monorail?
Yes, it has a number of important advantages. One is that it is generally much cheaper. Another is that it has much greater flexibility with regard to routing. That is, light rail can run on elevated structures, in tunnels, on its own right of way on the surface, in streets and in transit malls. But monorail can only run on elevated structures. Also, it is very easy for light rail vehicles to switch between tracks, such as at junctions of lines, but monorails require bulky and complex beam movement mechanisms (as monorails really run on large concrete beams rather than rails).
