TRUE. The more complex construction of the flip-up full face helmet generally makes them heavier, more prone to wind noise and less waterproof.
FALSE. You may cause damage to the spinal column by tugging on the helmet. The skull could also be injured. These are good reasons to keep the helmet on and immobilise the head and neck region.
FALSE. When stopped by a traffic officer it is advisable to at least open your visor or better, take your helmet right off.