For those who say "you don't need a helmet on campus," there's a simple <i>science-based</i> way to test your theory:<p>Look at the stats on brain injuries for bicycle accidents on campus. [1] has anecdotes, but no stats, unfortunately.<p>You have other bikes to collide with, you have people crossing the path, and yes, there are cars on campus. I've driven there.<p>[1] <a href="https://transportation.stanford.edu/bicycle/learn-about-bike-safety/love-your-brain" rel="nofollow">https://transportation.stanford.edu/bicycle/learn-about-bike...</a>