Volvo trucks were used in the Virginia test.

Truck platooning relies on Cooperative Adaptive Cruise Control (CACC) technology, which combines vehicle-to-vehicle communications with the adaptive cruise control capability.

“These new technologies have the ability to increase capacity on our highways and make freight transportation more efficient,” acting Federal Highway Administrator Brandye Hendrickson said in a press release. “With innovations like these, we can get more out of the highway system we already have, relieve traffic congestion and reduce costs to the freight industry.”