Motorcycle regulation for Arctic Thunder It is mandatory that all persons operating or riding as a passenger on a motorcycle use appropriate Personal Protection Equipment (PPE) while on a Department of Defense installation. PPE requirements are as follows: a. A helmet certified to meet Department of Transportation (DOT) standards. Helmet must be properly fastened under the chin. If stationed outside CONUS and the host nation does not have an equivalent helmet standard, the helmet will meet the U.S. DOT standard. The DoD requires use of a helmet even in those states or host nations where helmets are not required by state or host nation traffic laws. b. Impact or shatter resistant goggles or full-face shield properly attached to the helmet. A windshield or eyeglasses alone are not proper eye protection. c. Sturdy Footwear is mandatory. Leather boots or over the ankle shoes are strongly encouraged. d. Long sleeved shirt or jacket, long trousers, and full-fingered gloves or mittens designed for use on a motorcycle/ATV. e. A brightly colored outer upper garment during the day and a reflective upper garment during the night are required. Outer upper garment shall be clearly visible and not covered.