Black and white image of a mechanical helmet drop machine from Virginia Tech University

The Data Behind the Helmet

Virginia Tech's Rating System

Virginia Tech’s STAR rating system is one of the most respected evaluations in helmet safety, measuring the likelihood of concussion from one thousand impact scenarios.

The STAR (Summation of Tests for the Analysis of Risk) rating system assesses helmet safety by simulating a range of impact scenarios that athletes might experience. The lower the STAR rating the better, meaning less concussions per thousand impacts.

View Virgina Tech's Ratings

Best-Rated by Virginia Tech

Virginia Tech’s Helmet Lab explains its rating methodology as follows: “Each lab impact is weighted based on how often a cyclist might experience a similar impact. We compute concussion risk from measured peak linear acceleration and rotational velocity for each test. Each risk is multiplied by its weighting factor and then summed together to compute an overall score. The overall score estimates the number of concussions the average person would see if they experienced identical impacts at rates matching their weightings while cycling. A lower score indicates better helmet performance.”

In these independent tests, the PIKIO Si achieved the lowest score among bicycle helmets tested, earning the highest Virginia Tech rating. Because lower scores correspond to lower estimated concussion risk within the Virginia Tech test methodology, this result reflects the strong performance of the OBLIK™ impact management technologyintegrated into the helmet.

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