need state/country to answer accurately but know of no exemptions right off hand
NFL players were first required to wear helmets in 1943. At the time, they were made of leather. They then went to being made of plastic and now are made of polycarbonate.
All helmets must be DOT approved and have the DOT sticker on them, in the US, when helmets are required.
all motorcyclists wear helmets, squids don't wear helmets.
all ages are required to wear a motorcycle helmet, unless you live in a state where there are no helmet requirement... but there are not too many states that don't have a helmet requirement
Not all builders wear yellow helmets, but builders generally wear brightly colored helmets...brightly colored to maximize their visibility at the work site, and helmets to protect their heads from injury.
Not all gas masks are compatible with helmets, so some soldiers forgo helmets to wear their masks.
They all wear space helmets and eat the same things.
It depends on the state and/or country you live in. Most places that require riding safety helmets for junior riders, the cutoff age is 18 years. If you are at a horse show all riders may be required to wear helmets due to the liability insurance reguardess of age.
In the Tour de France, all participants are required to wear helmets that meet specific safety standards set by the Union Cycliste Internationale (UCI). Helmets must be worn at all times during the race, and failure to comply can result in penalties or disqualification.
They all wear space helmets and eat the same things.
In Indiana, individuals under the age of 18 are required to wear safety helmets while operating or riding on a motorcycle. Additionally, eye protection is mandated for all motorcycle riders, regardless of age, unless the motorcycle is equipped with a windscreen. This legislation aims to enhance safety for younger riders on the road.
I think it was just kaiser wilhelm...