A new technology seen in Smith helmets greatly reduces the amount of EPS needed. Koroyd, an assemblage of thermally welded co-polymer extruded tubes, creates a structure with efficient and consistent energy absorption properties, and can effectively replace much of the EPS foam used in helmet construction. Koroyd cores crush in a controlled manner on impact, similar to an accordion.
Another recent helmet technology is MIPS, short for Multi-directional Impact Protection System. MIPS attempts to replicate the cerebral fluid in your head by allowing rotation of the head on impact. This can reduce the severity of crashes created by rotational impacts. The video below fully explains how it works and the benefits of MIPS.
The problem, I believe, with these newer technologies revolves around the methods of testing. The CPSC standard outlines testing standards, but is setup as a pass/fail system. This encourages manufactures to build the lightest, best-looking helmets that just barely pass. There seems to be a lack of independent study to confirm or provide additional data to helmet safety.
Some would argue that helmet testing creates unrealistic scenarios and CPSC standards should be modified. While I’m not against this, I believe that first every helmet should be assigned a ranked safety number similar to a crash test rating on cars. This way, manufactures would be encouraged to create safer helmets, knowing that consumers would be willing to spend more money on increased protection. What if car crash standards were pass/fail? In this scenario, a 2015 Mercedes might receive the same safety rating as a Ford Pinto.