Human Factors

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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Age-Related Changes in Driver Attention

As populations age, understanding how attention, vision, and hearing change behind the wheel can help design safer roads, vehicles, and alerts for drivers of all ages.

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Use of auditory icons as emergency warnings in real cars and simulated worlds

What happens when you replace generic beeps with horn and tyre sounds in collision warnings, and what that tells us about safer in-vehicle alerts.

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Bike Horn User Interfaces: Taps, Presses, and Toggles

How modern bike horns use taps, presses, and directional gestures to give riders both polite bells and emergency car-level warnings.

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Your Lizard Brain on Loud Horns: Why Sound Beats Sight in Traffic Emergencies

How human hearing reacts faster than vision, how loud warning sounds tap into fight-or-flight circuits, and what this means for safe car and bicycle horn design.

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Sex Differences in Driver Risk and Behavior

What the evidence actually shows about male and female drivers: exposure, risk-taking, crash rates, injury vulnerability, and how much of the gap is culture versus biology.

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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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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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Why Your Eyes Lie to You Behind the Wheel

Drivers think they ‘look’ but don’t see. Here’s how human vision fails people on bikes—and why a car-like horn can pierce that blindness.

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