In Wisconsin, helmets: Question In Wisconsin, helmets: Answers Must be worn by all operators. Must be worn by operators who have had their license less than five years. Must be worn by operators under the age of 18. Explanation In Wisconsin, helmets are required to be worn by any operator under the age of 18 and any operator who holds a motorcycle instruction permit. However, it is strongly recommended that all operators and passengers wear helmets when riding. This questions appears in the following tests: Wisconsin Motorcycle Practice Test 31