Research Articles

How Your Ears Pinpoint Danger in Traffic When Hearing a Car Horn

A deep dive into how the brain localizes sound, why broadband and familiar horn timbres work best, and what this means for safer streets.

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New York City's Bike-Lane Drama: Lawsuits, Busways, and a Stalled Streets Plan

New York might be the original 'bike lane war' city. Over the last 15 years, it has gone from a handful of painted lanes to one of the largest protected networks in North America, but every big step has come with drama: lawsuits over flagship projects, apocalyptic congestion forecasts, a mayor who fell short of legal mandates, and now a car-free mayor-elect promising to complete what his predecessor left unfinished.

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Cambridge, Massachusetts: When a City Makes Bike Lanes the Law

Cambridge, Massachusetts wrote protected bike lanes into law and defended it in court—twice. The result is one of the strongest legal commitments to safe cycling infrastructure in North America, showing what happens when a city doubles down on safer streets.

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Bikes vs. Bill 212: Ripping Out the Solution

Ontario tried to rip out Toronto's busiest bike lanes in the name of reducing gridlock. A 2025 court ruling found the removal would make people less safe without easing congestion—and struck it down as unconstitutional.

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Trash, Rats, and Parking: Why NYC and Boston Make Garbage Choices

How NYC and Boston's obsession with curbside parking keeps streets full of trash bags and rats, and why Amsterdam-style containerization is the obvious fix.

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When Fire Trucks Block Safer Streets

How oversized fire trucks and outdated rules quietly block safer street design—and what it would take for firefighters to become Vision Zero allies.

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Loud Cities, Quiet Streets

Urban noise pollution comes overwhelmingly from cars, not cities themselves—and we already know how to design quieter, healthier streets.

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The Fastest Way Around Boston: Bikes vs the T from Cleveland Circle

Using travel-time maps from Cleveland Circle, we compare cycling and the MBTA to see which is really faster for getting around Boston.

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Can a Car Horn Make Cyclists More Courteous?

Can a car-horn-loud bike horn make cyclists more courteous? Research on risk compensation plus real Loud Bicycle rider stories.

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When Bikes Honk Like Cars

What a podcast interview taught me about building a car-horn-loud bicycle horn, driver reflexes, and the gap in bike infrastructure.

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