Question Helmets are: Answers Required for all motorcycle operators and passengers. Required for all motorcycle operators and passengers under the age of 18. Not required for motorcycle operators, but are required for passengers. Not required for any person riding or operating a motorcycle. Explanation In Idaho, all motorcycle operators and passengers under the age of 18 are required to wear helmets while riding. It is strongly recommended that all operators and passengers wear helmets, regardless of age. Take a FREE Practice Test Now This questions appears in the following tests: Idaho Practice Test