Warmer, wetter weather may lead to an increase in traffic injuries and fatalities unless interventions are put in place to adapt to these changing conditions.

A novel approach to calculating the costs of Mexico City’s “Day Without Driving” program estimates that roughly 3 percent of the country’s GDP is spent on the program—and that the costs are disproportionately burdensome for lower-income drivers.

Bicycle-sharing systems are gaining popularity in the United States, especially in dense urban areas such as New York, Washington, and Chicago. Proponents tout these programs as cheap, environmentally friendly, healthy, traffic-reducing alternatives to driving a motorized vehicle. But are they?

Congestion pricing and driving restrictions offer two different ways for policymakers to address traffic congestion: the former levies fees individuals who drive into or within a designated “charging zone,” while the latter enforces “road-space rationing” (usually based on a car’s permit color or license plate number). Transportation experts strongly recommend the use of congestion pricing due to its efficacy and environmental benefits—so why do many cities choose to implement driving restrictions instead?