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.

NACTO Releases Updated Urban Bikeway Guide
The third edition of the nationally recognized road design guide includes detailed design advice for roads that prioritize safety and accessibility for all users.

How I Learned to Stop Worrying and Love the Roundabout
What drives the U.S. backlash to roundabouts — objectively safer and more efficient than stop-and-go intersections?

2024: The Year in Zoning
Cities and states are leaning on zoning reform to help stem the housing crisis and create more affordable, livable neighborhoods.

San Francisco Development Centers Pedestrians, Public Space
The Mission Rock project eliminates street parking, replacing it with public seating and landscaping.

Biden Approves Two New National Monuments in California
The Chuckwalla and Sáttítla National Monuments will protect natural resources and sites of cultural significance for California native tribes.