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 2026, Financial Times Europe doesn't need driverless cars David Zipper January 6, 2026 2026, Financial Times What, exactly, do robotaxis offer European cities?
David Zipper January 6, 2026 CityLab, 2026 We Still Don’t Know if Robotaxis Are Safer Than Human Drivers David Zipper January 6, 2026 CityLab, 2026 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 19, 2025 2025, Fast Company Tesla’s ‘Mad Max mode’ points to a big problem for self-driving cars David Zipper December 19, 2025 2025, Fast Company Cars are being programmed to break traffic laws. What could go wrong?
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.
David Zipper September 26, 2025 2025, CityLab Why US Cities Pay Too Much for Transit Buses David Zipper September 26, 2025 2025, CityLab Can Abundance-coded reforms reduce the cost of US transit buses?
David Zipper September 25, 2025 2025, CityLab A Showdown Over Speed and Safety, Italian-Style David Zipper September 25, 2025 2025, CityLab Bologna adopted a blanket 30 km/h speed limit. Italy’s right-wing government declared war.
David Zipper September 15, 2025 2025, Vox, Featured A self-driving car traffic jam is coming for US cities David Zipper September 15, 2025 2025, Vox, Featured A few ways cities can future-proof themselves for the self-driving era.
David Zipper September 4, 2025 2025, CityLab One-Way Streets Are the Wrong Way to Tame Downtown Traffic David Zipper September 4, 2025 2025, CityLab A simple way to improve American downtowns: Make one-way arterials bidirectional.
David Zipper August 28, 2025 2025, CityLab Automated Traffic Enforcement Is More Popular Than You Think David Zipper August 28, 2025 2025, CityLab Despite their controversial reputation, traffic cameras are both effective and popular.
David Zipper August 13, 2025 2025, CityLab The US-Canadian Road Safety Gap Is Getting Wider David Zipper August 13, 2025 2025, CityLab An American is 2.5x more likely to die in a crash than a Canadian, and the trendlines are diverging
