The most effective action you can take to lower the risk of death or injury in a crash is: Question The most effective action you can take to lower the risk of death or injury in a crash is: Answers Read the operator’s manual. Ride well below the speed limit. Wear a helmet when riding. Ride with a passenger. Explanation The most effective thing you can do to improve your chances of surviving a crash is wear a properly fastened, high-quality helmet.