Anyway, to try to add something more, I have an anecdote: Two weeks ago, a car ran the red light and a speeding white SUV had to swerve out of the way to avoid it. The SUV lost control and smashed into the lightpole that was directly in front of me. I held up my backpack as a shield against the woman and baby in the stroller next to me walking in the opposite direction while bits of the car flew into the air. Luckily the pole held up. I had to make a guess about what was going to hit me. Debris or the car. My brain did that emergency lizard brain thinking that happens in situations like that. I found it really interesting for my brain to puzzle out what was going on in my head. Turned out that the debris was the only 'preventable' injury possible. I couldn't have gotten out of the way. I couldn't have gotten the lady and her baby out of the way. But I could conceivably stop debris from hitting us full on by shielding. If that was a cyclist... the most I'd have to worry about is a couple months of a really sore back.