This bill directs the Department of Transportation (DOT) to issue a final rule requiring the submission of safety assessment certifications for highly automated vehicles or automated driving systems. DOT shall make available to the public and submit to Congress a rulemaking and safety priority plan to accommodate the development and deployment of highly automated vehicles and to ensure their safety and security. DOT shall: (1) initiate the first rulemaking proceeding for the rulemaking and safety priority plan within 18 months of this bill's enactment, and (2) complete research into the development of updated safety standards or performance requirements for motor vehicle headlamps within two years.