Legislation was introduced in Massachusetts to establish a pilot program to impose a vehicle mileage user fee. The bill is intended to supplement the gas tax and implement alternative ways to raise transportation revenue for the state. The pilot program would include at least 1,000 drivers of trucks, passenger and commercial vehicles. These drivers would have on-board vehicle-mileage-counting equipment installed on their vehicles that can report the number of miles traveled. Payments would be collected from participants. As gas tax revenues decrease due to a more fuel-efficient fleet of vehicles, states are looking for new sources of funding for pet projects.