Can taxing trucks by the mile help save transportation funding?

As part of the experiment, researchers came up with three different pricing schemes for the mileage tax. The first one would simply charge a basic fee per mile traveled. A second would also charge truckers lower rates for taking highways designed to handle trucks, and higher rates for taking local roads. The third set-up would give discounts to trucks that traveled during off-peak hours, to try to cut down on traffic jams.