How many “metropolitan authority” in the world?
Mass commuter traspotation authorties. Bus, trains subway for examle MTA in NY.
Size:
How many train cars world wide?
How many buses world wide?
How many people use them? what is their estimate value?
There would be one for every city that offers public transportation. So a few hundred thousand would be my guess.
MBTA Commuter and Amtrak trains Back Bay Station Boston MA
