Class I - Dangerous
The skateboards can stop balancing the rider if the boards' limits are exceeded, posing a crash hazard that can result in serious injury or death.
Future Motion Inc., of Santa Cruz, California
Class II - Moderate
The footpad can fail to disengage after the rider has dismounted while the board is in motion and the skateboard can unexpectedly continue to operate, posing an injury hazard to bystanders.