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 Structural Issues and Bureaucracy Impede Transit Projects
How outdated and inefficient city processes can hinder the progress of transportation projects and prevent the development of a comprehensive transportation strategy.

Early Sharrow Booster: ‘I Was Wrong’
The lane marking was meant to raise awareness and instill shared respect among drivers and cyclists. But their inefficiency has led supporters to denounce sharrows, pushing instead for more robust bike infrastructure that truly protects riders.

Long Island Rail Now Connects to Grand Central Terminal
A new rail service launched this week could save commuters as much as 40 minutes on trips between Long Island and Manhattan.

San Francisco Tunnel Project Balloons in Cost
The plan to extend a Caltrain line to the Salesforce Transit Center is now expected to cost $6.7 billion as the agency faces a budget shortfall for its electrification project.

White House Announces Policies Aimed at Protecting Renters
The administration acknowledges its limited powers in solving the nation’s housing affordability crisis, but says new actions will examine unfair rental practices and recommend policies to state and local governments.