Wearing a helmet can reduce the chances of a fatal head injury in: 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 Wearing a helmet can reduce the chances of a fatal head injury in: Answers Only low-speed crashes. Only single-vehicle crashes. Any crash, regardless of speed. Only high-speed crashes. Explanation At any speed, wearing a helmet gives you a three times greater chance of surviving head injuries in the event of a crash.