>> Poor people pay a larger proportion of their income and wealth on such tolls. If you want to charge for use of a resource, to discourage over-use, and only

>> Poor people pay a larger proportion of their income and wealth on such tolls. If you want to charge for use of a resource, to discourage over-use, and only to raise enough to fund production of more of that resource, it's entirely irrelevant that it's "regressive" (which is a very loaded term), because it is not the main source of government revenue, and people benefit from the expenditure of the funds raised by the tax directly in proportion to how much they are taxed. If the objective is to use the tax as a proxy to tax general utilization of public infrastructure and services, then yes, it would be inappropriate to choose a tax on an activity that is a poor proxy, e.g. an activity that the poor engage in out of proportion to their general use of public infrastructure and services.