A libertarian think tank is taking its fight against the Jones Act to the streets.

Washington-based Cato Institute has rented two billboards on interstate highways near Newark Liberty International Airport in northern New Jersey and in the northeast Bronx, blaming the nearly-century old law for creating traffic jams while directing drivers to BlameJonesAct.com.

"Less than 5% of the volume of US domestic freight is transported by water, whereas the comparable figure in Europe is 20%," said Dan Ikenson, the director of Cato's Herbert A.