How does a vented helmet prevent fire from entering the vents?
That is a scary thought. One method might be the use of a low melt temp air supply hose to self disconnect to assist with vehicle exit and also terminate any path for hot pressurized air being forced inside the helmet. Additionally, a crash sensor electrical cutoff switch on the helmet air supply fan might be another precaution.
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
