David Zipper April 22, 2026 2026, CityLab Why Cities Shouldn’t Fall For the Robotaxi Hype David Zipper April 22, 2026 2026, CityLab Transportation historian Peter Norton believes the hype around self-driving cars is overblown and dangerous
David Zipper April 14, 2026 2026, CityLab Searching for the ‘Smoking Gun’ in US Pedestrian Deaths David Zipper April 14, 2026 2026, CityLab Why do so many Americans die while walking?
David Zipper April 1, 2026 2026, CityLab Why Trump’s War on DC’s Streets Matters David Zipper April 1, 2026 2026, CityLab Trump and MAGA are undoing years of work to make DC’s streets safer and more enjoyable
David Zipper March 26, 2026 2026, CityLab Could Congestion Pricing Pay Off for Chicago? David Zipper March 26, 2026 2026, CityLab Congestion pricing in New York City has been a smashing success. Could Chicago go next?
David Zipper March 18, 2026 2026, CityLab Here Comes the Self-Driving Traffic Surge David Zipper March 18, 2026 2026, CityLab As AVs scale, they’ll increase car use -— and thicken congestion
David Zipper March 10, 2026 2026, CityLab The US Is Counting Traffic Deaths Wrong David Zipper March 10, 2026 2026, CityLab Deaths per capita offers a complete picture of crash risk. Deaths per mile does not.
David Zipper February 23, 2026 2026, CityLab An Insurance Expert Appraises the Safety Record of Self-Driving Cars David Zipper February 23, 2026 2026, CityLab How safe are robotaxis, really? To find out, I spoke with a data guru at the Insurance Institute of Highway Safety.
David Zipper February 10, 2026 2026, CityLab The Best Tactics for Tackling Speeders David Zipper February 10, 2026 2026, CityLab The research is clear: Cities have plenty of ways to reliably curtail speeding. But implementation often feels like pulling teeth.
David Zipper January 30, 2026 2026, CityLab Congestion Pricing’s Unexpected Winners: Suburban Drivers David Zipper January 30, 2026 2026, CityLab Surprisingly, drivers’ time savings from NYC congestion pricing have overwhelmingly gone to those traveling outside Manhattan entirely.
David Zipper January 22, 2026 2026, CityLab Achieving ‘Transportation Abundance’ Is All About Density David Zipper January 22, 2026 2026, CityLab A surefire way to make transportation more affordable and abundant? Increase density.
David Zipper January 14, 2026 2026, CityLab E-Bike Boosters Ask: Is It All Downhill From Here? David Zipper January 14, 2026 2026, CityLab The e-bike industry is down, but it’s far from out.
David Zipper January 6, 2026 CityLab, 2026, Featured We Still Don’t Know if Robotaxis Are Safer Than Human Drivers David Zipper January 6, 2026 CityLab, 2026, Featured Triumphant claims about AV safety are wildly overblown.
David Zipper December 22, 2025 2025, CityLab When It Comes to US Transportation, 2025 Had Some Wins, Too David Zipper December 22, 2025 2025, CityLab Despite Washington’s headwinds, many cities and states made transportation safer, cleaner, and better this year
David Zipper December 5, 2025 2025, CityLab A Bright Idea for Road Safety: Traffic Light Timing David Zipper December 5, 2025 2025, CityLab The humble traffic light is a potent safety solution that’s hiding in plain sight
David Zipper November 25, 2025 2025, CityLab Bikeshare Shouldn’t Kick Tourists to the Curb David Zipper November 25, 2025 2025, CityLab Why do so many bikeshare systems seem to be fleecing visitors?
David Zipper November 19, 2025 2025, CityLab On the French Riviera, Street Reforms Come From the Right David Zipper November 19, 2025 2025, CityLab Can conservatives support restricting cars and boosting transit, walking, and, biking? The French Riviera offers lessons.
David Zipper October 23, 2025 2025, CityLab American Roads Are Paved With Inefficiency David Zipper October 23, 2025 2025, CityLab My conversation with Yale prof Zach Liscow about the wild inefficiencies of state DOTs
David Zipper October 17, 2025 2025, CityLab What Comes After the ‘War on Cars’? David Zipper October 17, 2025 2025, CityLab I spoke with the War on Cars podcasters about the past, present, and future of anti-car activism
David Zipper October 10, 2025 2025, CityLab ‘Car Brain’ Is Making the US Unhealthy and Dangerous. EVs Won’t Fix It. David Zipper October 10, 2025 2025, CityLab I review a trio of new books claiming that cars damage society as well as the planet
David Zipper October 9, 2025 2025, CityLab The Secret to Vancouver’s Public Transit Ridership Recovery David Zipper October 9, 2025 2025, CityLab Vancouver’s regional transit system is thriving. Here’s why.
