This map identifies states or groups of states that are either considering a low cabon fuel standard (LCFS) or have adopted an LCFS. An LCFS is aimed at reducing greenhouse gas emissions from transportation fuels without prescribing the fuel type. It is a life-cycle intensity standard, which means that (a) it looks at the whole life cycle of the fuel –producing it, moving it, and using it in a vehicle engine, and (b) it is measured not in absolute emissions, but rather in intensity – for example, grams of greenhouse gases per unit of fuel energy. Typically, an LCFS requires a regulated fuel provider to reduce its average fuel carbon intensity (AFCI) by some amount from a defined baseline year. For instance, California’s LCFS requires fuel suppliers to reduce their AFCI by 10 percent by 2020 from a 2010 baseline. LCFS programs typically allow for trading and banking of emission credits in order to enhance flexibility and support innovation.