Under proposed legislation, Illinois would explore the viability of reducing reliance on the state's gas tax by putting in place a "road usage charge," essentially a tax on the number of miles driven.

An Illinois representative has introduced legislation to tax road mileage as the state sees less revenue from the gas tax.

A new proposal in Springfield would change how Illinois funds its roads by charging drivers by the mile instead of a gas tax, with a pilot program to study the effectiveness of the program.