n 2020 and into 2021, transportation agencies, companies and advocacy groups acted swiftly in the face of the unique public health crisis and disruption caused by COVID-19. They provided solutions that kept frontline workers, groceries, health services and other critical needs moving. What was so shocking to many experts was not only how rapidly these responses mobilized around the world, but also how effective they were and the creativity apparent in each effort, from reallocating street space to things like building pop-up bike and pedestrian infrastructure.