Currently the nation's interstates are toll-free, except to pay for new lane construction. With the Highway Trust Fund set to run out of money, many are turning to tolls as a way to fund highway and transit projects. Others think raising the gas tax is a better option. This hour we'll talk about several proposals to keep our roads running smoothly.
Martin Di Caro, transportation reporter for WAMU
David Goldberg, Communications Director, Transportation for America
Randal O'Toole, Cato Institute Senior Fellow on transportation issues