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.

Why Aren’t There More Bollards in US Cities?
Solid barriers, like the dormant ones in New Orleans, are commonly used to improve road safety in Europe. Why not here?

Learning From Wildfire Evacuations
Researchers are working to understand how people behave during wildfire events and how to most effectively get people to safety during deadly fires.

Parking Reform Yields New Housing
As more cities eliminate or reduce their minimum parking requirements, the impact on housing supply is coming into focus.

Repurposing Vacant Schools
Some communities are turning abandoned campuses into offices, art studios, and housing.

USDOT Announces First Round of 2025 RAISE Grants
The agency awarded $1.32 billion in funds to transportation infrastructure projects aimed at road safety and mobility.