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.

Federal Regulators Ask Tesla for Robotaxi Details Ahead of Planned Launch
Tesla CEO Elon Musk says the company will launch self-driving taxis in Austin in June and other U.S. cities by the end of the year.

Seattle’s Pike Place Market Leans Into Pedestrian Infrastructure
After decades of debate, the market is testing a car ban in one of its busiest areas and adding walking links to the surrounding neighborhood.

The World’s Longest Light Rail Line is in… Los Angeles?
In a city not known for its public transit, the 48.5-mile A Line is the longest of its kind on the planet.

Quantifying Social Infrastructure
New developments have clear rules for ensuring surrounding roads, water, and sewers can handle new users. Why not do the same for community amenities?

Dallas Code Reform Makes Way for Missing Middle Housing
The Dallas City Council voted to change the city’s building code to allow up to eight residential units in three-story buildings.