Introduction: The Automated Road Transportation Symposium 2021

In 2021, the Automated Vehicles Symposium was succeeded by the Automated Road Transportation Symposium (ARTS21), which was produced entirely by the Transportation Research Board. With the continuing disruptions from the global pandemic, it was again produced as a virtual online meeting. The plenary presentations and breakout discussions continued to provide the meeting participants with the most up-to-date and authoritative information about the current international state of development and deployment of road vehicle automation systems, retaining its standing as the essential global meeting for industry, government and research practitioners in the field.