Reduce the fares to nothing.  Utility of a system rises dramatically as the frequency of bus/train arrivals drops below about eight minutes so people can just show up without checking the schedule.<p>Tax money goes to build roads and other car related infrastructure.  Car travel is obviously subsidized since you generally do not pay to drive on a given road at the time you drive.<p>It would not be unreasonable to subsidize buses or other public transportation in a similar way.<p>Obviously, free internet should be provided on all buses and trains, as well as increased bicycle carrying capacity.<p>Also, if the ticket price was reduced to zero for buses, ridership would increase and costs per rider would be reduced.  Greater bus ridership would reduce the money municipalities would need to spend for road expansion.