Delaware: 1,000 drivers revving up to test idea of replacing fuel tax with mileage-based user fee

Delaware has won a third federal grant to explore the pros and cons of a taxing system that would charge drivers based on how far they drive.

Funds states earn through a tax on fuel have declined as car manufacturers have improved fuel economy. That has led to a federal study into alternative ways to fund U.S. highway maintenance and repair. Since 2016, Delaware has been the testing ground for that study in partnership with the I-95 Corridor Coalition, a group of states on the East Coast from Maine to Florida.