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

Two More Staffers Join the Growing Streetsblog Newsroom!

Meet Austin C. Jefferson and J.K. Trotter! And read about our big plans for local news.

November 11, 2025

How Cheap Technology Could Fix New York’s E-Bike Enforcement Mess

Internet-connected technology could eliminate commercial e-bike crashes and battery fires.

November 11, 2025

Tuesday’s Headlines: Dean Joins the Team

Mayor-elect Mamdani made his first two hires as the Daily News attacked his free buses platform. Plus more news.

November 11, 2025

The False ‘Trolley Problem’ At the Heart of the Autonomous Vehicle Debate

Waymo said it has a "plan" for when one of the company's cars kills someone. But we should be planning for a world when no car kills anyone — autonomous or not.

November 11, 2025

Bad Data Alert: Council Tears Apart DOT Daylighting Study

The internal review, obtained by Streetsblog, dismantles DOT's fear-mongering.

November 10, 2025

Former DOT Boss: Here’s What Mayor Mamdani Needs as Transportation Commish

Bottom line: The next commissioner needs to be willing to move aside staffers who are unwilling to be change-agents and to empower all the bright (often young) players who embrace the future.

November 10, 2025
See all posts