The agency has had four vendors pass an "autonomy test," Customs and Border Protection Commissioner Rodney Scott said during a budget hearing Thursday.

The Navy launched its first "Saildrone" as a part of the exercise Digital Horizon. The vessel is powered by the sun and the wind.

The outcomes of three new projects could help a reluctant public and state and local policymakers overcome reservations with autonomous technology.

Tesla Motors this week became the first company to roll out advanced auto-pilot technology into its vehicles, zooming past regulators’ efforts to figure out whether self-driving cars…