2016 was a monumental year for Vision Zero across the United States.

The number of cities committing to Vision Zero more than doubled, and interest in adopting meaningful, action-driven policies for safe streets has spread from a few early-adopter, big, coastal cities to communities large and small across the country. As we roll into 2017 with a challenge that is as big as ever, it’s helpful to look back at the trends — both promising and troubling — that shaped Vision Zero progress in 2016.