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.

How Sharrows Became Cycling’s Most Hated Symbol
Originally designed as a low-cost way to encourage safer road sharing between bikes and cars, the sharrow has become a symbol of the lack of commitment to protected bike infrastructure in many cities.

Amazon Plans for More Massive Warehouses
The company is building its biggest-ever distribution centers in New York, Colorado, and California.

D.C. Could Legalize ‘Idaho Stop,’ Ban Right Turns on Red
Proposed legislation would allow cyclists to treat stop signs as yield signs and eliminate right turns on red in an effort to reduce cyclist and pedestrian fatalities.

Virginia Using Variable Speed Limits To Reduce Congestion
Experts say reducing speed limits based on traffic volumes can relieve congestion and improve the flow of traffic.

The Benefits of Fare Capping
Fare capping—putting a ceiling on the amount a transit passenger pays in a day or a month regardless of the number of trips—is becoming a popular policy option for transit agencies seeking to increase equity and bring back riders.