Current helmets protect against impact injuries (eg, the pavement hitting your head). Yes, when the speed/energy is high, helmets won't do much. But when the sp

Current helmets protect against impact injuries (eg, the pavement hitting your head). Yes, when the speed/energy is high, helmets won't do much. But when the speed is moderate, helmets help a lot. Then, there's also wearing the helmet properly, something many bicyclists fail to do. The helmets today are only tested with straight on impacts: they're tested by dropping them straight down on the crown of the helmet. But that doesn't happen in the real world. You're moving, meaning you're hit at an angle, meaning that there's a potential for a diffuse axonal injury[1]: the rotational component of the injury. MIPS[2] has helmets that help protect against that. Is wearing a helmet safer than not wearing a helmet? Without a doubt. [1]:https://en.wikipedia.org/wiki/Diffuse_axonal_injury https://en.wikipedia.org/wiki/Diffuse_axonal_injury [2]:http://mipshelmet.com/home http://mipshelmet.com/home