When you're in the market for a new helmet, it can be a challenge to know which is safest for you. One good way to know that the helmet you're buying is safe is to check if it is DOT certified. DOT motorcycle helmet certification is indicated through a sticker, located on the back of the helmet. If the helmet that you're interested in doesn't have this sticker, don't buy it. You have no idea if it will protect you in a crash. The United States Department of Transportation, otherwise known as the DOT, is a government agency that tries to keep you safe on the road, through regulations and safety standards. What are the DOT motorcycle helmet certification standards? They require that a helmet which is deemed safe be able to absorb a large amount of energy upon impact, to prevent most helmet penetration, and have a fastener which can withstand a lot of force. Where is the DOT motorcycle helmet certification testing done?