>> deprive the transit authority of revenue I think that most of the time public transportation must be subsidized anyway. In fact some cities in Europe make

>> deprive the transit authority of revenue I think that most of the time public transportation must be subsidized anyway. In fact some cities in Europe make public transport completely free, because subsidizing 100% of the cost it not much worse than subsidizing (on average) 75%, especially considering that you can greatly reduce traffic jams this way.