Diana is a writer and urbanist passionate about public space, historical memory, and transportation equity. Prior to joining Planetizen, she started and managed a farmers' market and worked as a transportation planner in the bike share industry. She is Planetizen's editor as of January 2022.

Seattle To Expand Traffic Camera Program
The new cameras are designed to reduce travel time for buses and limit speeding at dangerous intersections.

Reforms Are Coming to American Road Design
The federal manual governing road design is getting an update. Will it encourage real progress toward road safety?

The ‘Great Bike Infrastructure Project’
A new mapping project envisions a coordinated national push for bikeways.

One-Third of Downtown Salt Lake City Devoted to Parking
A new map highlights prime downtown real estate that could be repurposed for more productive uses.

Advice for Autonomous Cars
Drivers for Uber and Lyft in San Francisco express their concerns and advice for self-driving taxi services.