Helmets are required for: Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question Helmets are required for: Answers Motorcycle passengers under the age of 18. Motorcycle passengers who do not hold a license. All motorcycle passengers Explanation In South Dakota, all operators and passengers under the age of 18 are required to wear helmets while riding. It is strongly recommended that all motorcycle riders wear helmets.