On 2/2/2018 7:44 PM, John B. wrote:


Ah, I had forgotten that an individual not mounted on a bicycle has
no need of a safety helmet.

As we recently saw, it's not just a bicycle that triggers the need for
styrofoam. It's anything with pedals. Even a multi-hundred pound rail
car that's far more stable than a kitchen chair:
https://www.youtube.com/watch?v=8x6FgHnnzQU

Or a low recumbent tricycle: http://www.terratrike.com/

I guess it must be the pedals that somehow impose tremendous risk of TBI.

--
- Frank Krygowski