There's research on this exact topic, and you'd probably get more space if you *didn't* wear a helmet: https://psyarxiv.com/nxw2k. Whether that's because you're more relatable as a human being or because people are more risk-averse, I don't know.
I'd never looked into it much beyond the articles that pop up every now and then on social media, but this actually appears to be pretty well researched. More fun reading: http://drianwalker.com/overtaking/
I'd never looked into it much beyond the articles that pop up every now and then on social media, but this actually appears to be pretty well researched. More fun reading: http://drianwalker.com/overtaking/