

Also in some countries, cars ride on the right but heavy rail ride on the left (because Britain).
Light rail need to drive on the same side as other surface transport because they share road. Else they need to be fully separated, which is costly enough where at this point it is better to build heavy rail.
So you will always have a complex interchange between light rail and heavy rail on those countries.
Not to say it doesn’t happen but it does hamper this concept.





Progressive taxation rate that can go negative (aka people can receive money) is more fair.
Could even be easier to implement because it is not only a “social” benefit that cost tax payers money. That could help convince some people.