The 3 Revolutions Policy Briefs reflects a body of work that was started at the 3 Revolutions Conference in November 2016, where leaders from across the United States and Europe came together to discuss the future of transportation. During the conference attendees discussed topics that were developed into a series of policy briefs to introduce policy challenges, recommendations and research needs on a variety of topics. Some of these policy briefs are more prescriptive, offering recommendations from the authors based on a foundation of established, ongoing research. Some of the policy briefs raise more questions than answers. All the briefs reflect the opinions of the authors and contributors and not UC Davis.