Ever heard of truck platooning? It’s happening on the Triangle Expressway.

HOLLY SPRINGS, North Carolina
The three white tractor-trailer trucks driving up and down the Triangle Expressway on Wednesday didn’t look all that remarkable, aside from the lack of big signs or logos on their sides. Only the small radar and antennae rising from their mirrors suggested that the trucks contain the latest technology designed to assist drivers and prevent accidents.

Volvo Trucks and FedEx disclosed Wednesday that they have been testing the technology on the toll road in western Wake County since April. The federal government named the Triangle Expressway, also known as N.C. 540, one of the country’s 10 “proving grounds” for autonomous vehicle technology early last year, and Volvo and FedEx are the first companies to take advantage of it.