Daimler Trucks is testing autonomous trucks on highways in the United States.
Daimler and its recently-purchased subsidiary Torc Robotics say that the Freightliner Cascadias they are running in Virginia have Level 4 autonomous "intent technology." 
They have a qualified and experienced truck driver on board at all times, along with an engineer – but the trucks are capable of running with minimal or no driver input most of the time.
The autonomous-tech testing has gone public only after "months of extensive testing and safety validation" on closed tracks. 
The test track and onroad testing "play an integral role in establishing the essential building blocks for successfully advancing automated technology," says Daimler Trucks.
Daimler board of management member responsible for trucks, Martin Daum, says: "Bringing Level 4 trucks to the public roads is a major step toward our goal to deliver reliable and safe trucks for the benefits of our customers, our economies and society."
Torc's system for automated driving has been tested in urban and long-distance routes as well as in rain, snow, fog and varying light conditions.