SALEM, Ore. – The Oregon Department of Transportation has enlarged its mileage-based road tax program, Congressional Daily reports. The program, made law in 2012, will track 5,000 drivers this year.

The motorists enrolled in the program will pick a recording device, some with GPS technology and some without, that will monitor miles driven in order to calculate their road tax of 1.5 cents per mile. Those in the program will not have to pay the state’s 30 cents per gallon gasoline tax. The legislature would have to approve a statewide rollout of the program.

By giving participants the choice of devices with and without GPS technology, the state hopes it will reduce fears of invasion of privacy. “Having that choice is critical for getting broad support,” said Jim Whitty, who manages the state’s innovative partnerships and alternative funding and oversees the program.

Those concerns about privacy and government knowledge of where vehicles have been driven have dogged the discussion about using miles-driven as an alternative to gas taxes. With the ability of consumers to pick which recording device is used on their cars, even the American Civil Liberties Union has come on board with the program.

Oregon is working with private businesses to develop several tracking tools that use GPS and several that don’t. Right now, Whitty’s office is only concerned with making sure all devices properly record miles driven.