In June last year, the companies began testing self-driving trucks supervised by a driver and a technician to deliver cargo between Houston and Fort Worth in Texas.

The companies said their extended collaboration will include analyzing the operational capacity of Waymo Via, which covers trucking to last-mile deliveries, to address customer needs.

J.B. Hunt also said it would explore a technological integration with Waymo, in which Waymo Via would be made accessible on its digital marketplace J.B. Hunt 360.

Although Waymo and other companies have been developing autonomous driver technology for over a decade, large-scale commercial operations of such services for moving freight or everyday commute have not come to fruition yet.

U.S. trucking and delivery firms are already struggling with driver shortages, exacerbated by the COVID-19 pandemic, difficult working conditions and an aging workforce.

(Reporting by Akash Sriram in Bengaluru; Editing by Ramakrishnan M.)