Editorial Board

Set Self-Driving Cars Free

New federal safety guidelines for automated cars take the right approach: restrained, not restrictive.

They're coming.

Photographer: Angelo Merendino/AFP

In publishing new guidelines for automated vehicles this week, the U.S. Transportation Department tacitly acknowledged two important truths: This technology will probably be great. And no one knows what will happen.

The regulators took a restrained approach, offering a safety checklist for manufacturers and better guidance for state officials but stopping short of issuing restrictive new rules. That's prudent: As President Barack Obama put it, with mild understatement, "Government sometimes gets it wrong when it comes to rapidly changing technologies."