Skip to Content
Streetsblog New York City home
Streetsblog New York City home
Log In
Bicycle Safety

U.K. Study Finds Wearing a Bike Helmet May be More Dangerous

ian_walker.jpgWe are certainly still going to be wearing our helmets when we ride bikes on New York City streets, but here is an interesting study by Dr. Ian Walker a "traffic psychologist" from Bath University in Great Britain. Walker found that motorists drove more safely and carefully when passing cyclists who were not wearing helmets. These findings are similar to some of the ideas put forward by David Engwicht in his book, "Mental Speed Bumps: The Smarter Way to Tame Traffic," a very interesting read if you haven't already picked it up.

As reported by the BBC on Monday:

Cyclists who wear protective helmets are more likely to be knocked down by passing vehicles, new research from Bath University suggests.

The study found drivers tend to pass closer when overtaking cyclists wearing helmets than those who are bare-headed.

To carry out the research, Dr Walker used a bike fitted with a computer and an ultrasonic distance sensor to find drivers were twice as likely to get close to the bicycle, at an average of 8.5cm, when he wore a helmet.

The experiment, which recorded 2,500 overtaking motorists in Salisbury and Bristol, was funded by the Engineering and Physical Sciences Research Council.

"This study suggests wearing a helmet might make a collision more likely in the first place."

Dr Walker thinks the reason drivers give less room to cyclists wearing helmets is because they see them as "Lycra-clad street warriors" and believe they are more predictable than those without.

Stay in touch

Sign up for our free newsletter

More from Streetsblog New York City

Not So Fast! We Rode NYC Ferry with Would-Be Council Speaker Amanda Farías

Council Member Julie Menin claims she has the votes to be the next Speaker, but Bronx Council Member Amanda Farías has shown a lot more interest in livable streets issues.

November 28, 2025

Book Excerpt Special: Jonathan Lethem’s ‘Program’s Progress’

Class struggle. Infirm secondary superheroes. Suicidal sheep. It’s all in Jonathan Lethem's new collection of short stories, "A Different Kind of Tension." Here's one — featuring class struggle with cars!

November 28, 2025

Special Post-Thanksgiving Friday Video: The Positive Economics of Bike Lanes

Some yahoo in Montreal said that whatever bike lanes cost, they're too expensive! Well, no they're not.

November 28, 2025

Friday’s Headlines: Curbside Slide Edition

Good-bye, streeteries, we hardly knew ye. Plus other news.

November 28, 2025

Thursday’s Headlines: Giving Thanks(ish) Edition

Yes, let's give thanks. But let us also not forget why we're so lucky. Plus other news for your holiday day off.

November 27, 2025

‘Gold Standard’ Open Street Has Two Paths Forward To Become True ‘Paseo Park’

The DOT is contemplating two options for the 1.3 mile-long linear park in Jackson Heights. Which would you choose?

November 26, 2025
See all posts