On 10/06/2019 15:18, TMS320 wrote:
On 10/06/2019 00:38, JNugent wrote:
On 09/06/2019 13:15, Simon Jester wrote:

https://www.youtube.com/watch?v=LRpeOuBk5yQ

If they had been wearing cycle helmets they would have been seen.
Worst case the cycle helmet force field would have prevented the crash.

You seem to be misremembering the assertions made by those opposing
the compulsory *and* voluntary use of cycle helmets (the latter on the
basis that they did not want such use to be more widely accepted).

Assertions made were that the cyclist was at less risk of head
injuries in a collision if not wearing a cycle helmet (as
counter-intuitive as that may be). The mechanics of this were never
fully explained (pace a reference to "rotational forces" and another
to the thickness of the helmet structure), leaving those of us who are
not immediately familiar with such items to the sole logical
conclusion that the cyclist without a helmet would manage to keep his
head the crucial couple of centimetres away from collision with the
asphalt or street furniture, with a force-field indeed being the only
means of protection.

Simple mechanics provides the explanation - for those with a
comprehension of simple mechanics. For those that don't, it might as
well be a force field.

So you are right and all the professional advice is wrong?

Asking for a friend.