I think I know the basics. In the NYC implementation entering the toll area is $9 a pop during certain hours, and cheaper outside them. $9 maximum once a day. Low income residents get 50% off.
In general the primary purpose of these pricings is to discourage people from using the priced thing, revenue from the fees is a bonus. The price naturally is more painful to pay the less you have money, so the less you have the more you are discouraged.
In general the primary purpose of these pricings is to discourage people from using the priced thing, revenue from the fees is a bonus. The price naturally is more painful to pay the less you have money, so the less you have the more you are discouraged.