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

Council Members Put Everything But Riders First at ‘Bus Oversight’ Hearing

The Council spent its last bus oversight hearing of its term asking the MTA and city to pull back on bus lane enforcement.

November 14, 2025

Community Board Defies Parents in Vote to Reopen Forest Park to Cars

The Parks Department appears to have given in to a vocal group of Queens drivers. Paging Mayor Mamdani!

November 14, 2025

Daylighting Isn’t Anti-Driver — It’s Pro-Common Sense

Listen to a Republican: "The Department of Transportation's negative report on daylighting is like judging the effectiveness of lifeboats on the Titanic by studying the ones that never left the ship."

November 14, 2025

Friday’s Headlines: More Agenda Items Edition

Transportation Alternatives laid out, in 85 chunky bullet points, what the next major should do. Plus other news.

November 14, 2025

SHAMEFUL: Pro-Parking DOT ‘Forced’ Lawmakers To Scale Back Daylighting Bill, Says Queens Pol

A parking-first City Hall has thrown up road blocks against pedestrian safety.

November 13, 2025

House T&I Chair Vows ‘No Money for Bikes or Walking’ in Fed Transportation Bill

The outlook for active transportation won't be good if advocates don't stand up.

November 13, 2025
See all posts