I guess if I was going to walk in the road with traffic.

like an everyday pedestrian you mean?

Everyday pedestrians generally walk on footpaths, not roads.

> So you wear a helmet as a pedestrian then?

I'm not going multiples of walking speed on something standing upright only thanks to gyroscopic forces, so no.

Also even when running I have way better maneuverability than as a cyclist.

Generally limbs > wheels when it comes to getting out of trouble.

I wear a helmet when skiing though.

If a car collides with you when you walk you could make the argument its safer to have a helmet. this is not evem remotely rare in terms of occurence.