Under the plan, a resident making $50,000 a year in taxable income will pay an extra $125 in income tax.
The five-year plan is worth more than $1.1 billion.
Test vehicles will be crossing the East End, Kennedy and Lincoln bridges, as well as crossing under a gantry in Jeffersonville.
The university's School of Public and Environmental Affairs took a look at the popularity of mileage user fees as half the states consider them.
Authors of a recent study from the Indiana Business Research Center say the reports shows more investment in job training would go a long way.
Environmentalists have fought the 47-mile tollway plan, arguing it would threaten the Midewin National Tallgrass Prairie south of Chicago.
More than 60 rural communities around Indiana are sharing nearly $80 million in federal funding for road and bridge improvements and other projects.
And an idea promoted by a Purdue expert testifying before the panel provoked debate among its members: the value of vehicle miles traveled, or VMT, fees.
Bloomington's mayor says at least one subcontractor walked off the job Friday because of an ongoing pay dispute.
The state of Indiana is looking into building the state’s fourth port, possibly in southeastern Indiana near Cincinnati.