Any low-carbon fuel standard can be a rule enacted to scale back carbon intensity within transportation fuels as compared to conventional petroleum energizes, such as fuel and diesel. The most prevalent low-carbon fuels are usually alternative fuels as well as cleaner fossil energizes, such as gas. The main purpose of a low-carbon fuel standard is to decrease carbon dioxide emissions linked to fuel-powered vehicles considering the entire life routine, in order to scale back the carbon footprint of transportation.