People who wear helmets whilst riding a bike are given less room by eg the drivers of motorvehicles. This is likely to cause them to have more collisions -and be grateful for their protective headgear.
Since these results were first published, there’s been a tonne of nonsense in the press about how you should wear a blonde wig whilst cycling rather than a helmet… today’s invention aims to provide the best of both worlds.
It takes the form of a bicycle helmet with a realistic coating of hair on the outside. Presumably, anything which makes a cyclist look more vulnerable would work (such as a small but perceptible built-in dynamic wobble in the steering or a skintight, fleshcoloured one-piece suit or even a large, bloodstained bandage).
Somehow the external wig seems a better idea.