Every day I have people pass me within arms reach.

The other day I had an idea that I've been messing with.

In a situation where I expect some close passes, I kept my left arm out.

Imagine riding down a rural two lane road with no shoulder or bike lane, you're claiming the lane you're in, and some cars behind just found a gap in oncoming traffic so they can pass.

If I keep my regular riding posture, I'd say about a quarter of the cars will pass close enough I can touch their window.

If I keep my left arm extended, none of them pass me close enough for me to touch them.

I don't plan to ride like this on a regular basis, and I don't know what conclusions I can draw from this, I just found my results interesting.