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 November 13, 2024 2024, Vox The most dangerous roads in America have one thing in common David Zipper November 13, 2024 2024, Vox In the US, 2/3 of city crash deaths occur on streets control by the state — not local gov. That’s a problem.
David Zipper August 28, 2024 2024, Slate, Featured How America Can Break Its Highway Addiction David Zipper August 28, 2024 2024, Slate, Featured Here's how the US can kick its wasteful, destructive habit of building ever-wider highways
David Zipper July 29, 2024 2024, Vox The big lie behind America’s ever-expanding highways David Zipper July 29, 2024 2024, Vox US transportation officials claim that widening highways will help solve climate change. That’s absurd.
David Zipper July 28, 2024 2024, Slate Will the Autobahn Finally Get Speed Limits? David Zipper July 28, 2024 2024, Slate Germany is having second thoughts about blazing-fast autobahn driving
David Zipper June 19, 2024 2024, CityLab Austria to ‘Super-Speeders’: We’re Taking Your Car David Zipper June 19, 2024 2024, CityLab In Austria, reckless speeders can have their car seized and sold by the government
David Zipper March 26, 2024 Slate, 2024 What Will Happen to Traffic in the Wake of the Baltimore Bridge Collapse? David Zipper March 26, 2024 Slate, 2024 Believe it or not, congestion probably won’t worsen while Baltimore’s Key Bridge is repaired
David Zipper February 6, 2024 2024, Slate A 7,000-Pound Car Smashed Through a Guardrail. That’s Bad News for All of Us. David Zipper February 6, 2024 2024, Slate Huge cars will destroy guardrails, leaving taxpayers to pay for expensive upgrades.
David Zipper September 7, 2023 2023, CityLab Rethinking Roadkill David Zipper September 7, 2023 2023, CityLab I spoke with Bel Goldfarb about his new book: Crossings, How Road Ecology is Shaping the Future of Our Planet
David Zipper November 3, 2022 2022, CityLab US Traffic Safety Is Getting Worse, While Other Countries Improve David Zipper November 3, 2022 2022, CityLab Why are Americans 2.5x to 4x more likely to die in a crash than those in other rich countries?
David Zipper August 10, 2022 2022, CityLab The Technology That Could Stop Speeders in Their Tracks David Zipper August 10, 2022 2022, CityLab No car should be going 90 mph+ on a public road. So why don’t we require speed governors?
David Zipper July 4, 2022 2022, Slate Joe Biden’s Misguided Plan to Lower Gas Prices David Zipper July 4, 2022 2022, Slate Instead of a counterproductive gas tax “holiday,” let’s reduce gasoline demand
David Zipper July 1, 2022 2022, CityLab Why Isn’t There a Canadian Traffic Safety Crisis? David Zipper July 1, 2022 2022, CityLab Why are Americans ~2.5x as likely as Canadians to die on the road?
David Zipper December 6, 2021 2021, The Atlantic The Deadly Myth That Human Error Causes Most Car Crashes David Zipper December 6, 2021 2021, The Atlantic Every year thousands of Americans die on the roads. Individuals take the blame for systemic problems.
David Zipper October 29, 2021 2021, CityLab As E-Bikes Speed Up, a Policy Dilemma Looms David Zipper October 29, 2021 2021, CityLab E-bikes are getting faster. Cities aren’t ready.
David Zipper October 22, 2021 2021, Featured, Washington Post Five Myths About Highways David Zipper October 22, 2021 2021, Featured, Washington Post Why five common myths about highways are just that — myths.
David Zipper September 28, 2021 CityLab, 2021 The Unstoppable Appeal of Highway Expansion David Zipper September 28, 2021 CityLab, 2021 Widening highways always fails to reduce congestion. Why do states keep doing it?
David Zipper April 7, 2021 2021, Slate What if Working at Home Makes Us Drive More, Not Less? David Zipper April 7, 2021 2021, Slate Could teleworking lead people to drive more after the pandemic?
