VMT stands for Vehicle Miles Traveled.

Some localities and states are looking at this as another way to tax people based on their frequency of use of the roads.

What do you think? An extra tax or more fair way to tax driving?

Right now the program is voluntary and being capped at 5,000 participants, but an ODOT official told Fox News the ultimate goal is to make it mandatory and change the way states pay for roads — forever.

http://www.foxnews.com/politics/2015/07/03/oregon-launches-program-to-tax-drivers-by-mile/