Gasoline-fueled motor vehicles include those fueled by gasoline, gasoline-alcohol blends, alcohol, and gaseous fuels like hydrogen, propane and natural gas. Pure electric vehicles are not included. The regulations at N.J.A.C. 7:27-15 cover inspection requirements, highway standards, idling limits and anti-tampering provisions. Emission test procedures may be found at N.J.A.C. 7:27B-5 (Air Test Method 5). Most gasoline-fueled vehicles are required to undergo an emissions inspection every two years. New vehicles may be exempt from inspection for the first five years. The Department also restricts idling of vehicles to three minutes in most cases and prohibits tampering with emission control devices.