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
David Zipper August 5, 2025 CityLab, 2025 All Hail the Humble Speed Hump David Zipper August 5, 2025 CityLab, 2025 Let us play homage to the speed hump, humble warrior in the battle against traffic chaos
David Zipper July 30, 2025 2025, CityLab We Should All Be Biking Along the Beach David Zipper July 30, 2025 2025, CityLab Biking along the beach is sublime. It’s a shame there are so few places to do it.
David Zipper July 23, 2025 2025, CityLab The High Costs of Trump’s ‘Big Beautiful’ New Car Loan Deduction David Zipper July 23, 2025 2025, CityLab The GOP will let Americans deduct auto loan interest from their taxes. It’s a terrible idea.
David Zipper July 10, 2025 2025, CityLab Why Did Cars Get So Hard to See Out Of? David Zipper July 10, 2025 2025, CityLab Posts known as A-pillars are creating dangerous blind spots
David Zipper July 8, 2025 2025, CityLab Can Americans Just Stop Building New Highways? David Zipper July 8, 2025 2025, CityLab I spoke with Erick Guerra about his book, Overbuilt, and the hidden damage of highway expansions
David Zipper July 8, 2025 2024, 2025, Slate Zohran Mamdani has some good ideas for NYC transit. His Biggest Promise Isn't One of Them. David Zipper July 8, 2025 2024, 2025, Slate Buses shouldn’t be free.
David Zipper July 2, 2025 2025, CityLab What Gothenburg Got Out of Congestion Pricing David Zipper July 2, 2025 2025, CityLab Congestion pricing can only do so much if a city that doesn’t have much traffic to start with
David Zipper June 17, 2025 2025, CityLab How E-Scooters Conquered (Most of) Europe David Zipper June 17, 2025 2025, CityLab I spoke with Polis’ Karen Vancluysen about how e-scooters are changing European cities — for better and for worse
David Zipper June 3, 2025 2025, CityLab The Global Struggle to Build Safer Cars David Zipper June 3, 2025 2025, CityLab Cars around the world are growing safer — but not in the US.
David Zipper April 28, 2025 2025, CityLab The Last Thing US Transit Agencies Should Do Now David Zipper April 28, 2025 2025, CityLab Cutting transit service leads riders to buy cars — and to abandon transit for good
David Zipper April 26, 2025 2025, Fast Company Virginia will use technology to slow chronic speeders’ cars—and other states are rushing to join in David Zipper April 26, 2025 2025, Fast Company This car safety tech has bipartisan appeal
David Zipper April 23, 2025 2025, CityLab A Car Guy Makes a Left Turn David Zipper April 23, 2025 2025, CityLab Matt Farah is one of the most powerful auto influencers in the world — and also a committed urbanist
David Zipper April 16, 2025 2025, CityLab Why the Best Bike Lanes Always Get Blamed David Zipper April 16, 2025 2025, CityLab Cities must build bike networks — not just bike lanes
David Zipper April 3, 2025 2025, CityLab What Would ‘Transportation Abundance’ Look Like? David Zipper April 3, 2025 2025, CityLab To improve transportation, the abundance movement must consider the kind of infrastructure that gets built — not just the quantity.
David Zipper March 25, 2025 2025, CityLab How SUVs Are Making Traffic Worse David Zipper March 25, 2025 2025, CityLab A groundbreaking new study suggests that SUVs are creating more traffic jams
David Zipper March 14, 2025 2025, CityLab The Dark Prophet of Car-Clogged Cities David Zipper March 14, 2025 2025, CityLab 70 years ago, Lewis Mumford warned that urban highways would be a disaster. We should’ve listened.
David Zipper March 13, 2025 2025, Fast Company Detroit killed the sedan. Trump’s trade war will make them wish they hadn’t David Zipper March 13, 2025 2025, Fast Company The Big Three’s commitment to car bloat leaves them vulnerable to Trump’s economic chaos
