The use of compressed/liquefied natural gas as a fuel for motor vehicles is rising quickly, mostly in local commercial trucking where a fleet can use a central filling station. As it begins to attract a broader consumer base, Massachusetts must address how the fuel will be measured and distributed in a commercial setting. Because both CNG and LNG are gasses in their natural state, they are generally measured by using the metric system, which does not readily lend itself to consumer comparison. This bill would establish a gasoline gallon equivalent for CNG, and for LNG (which primarily displaces diesel) a diesel gallon equivalent. These standards are aligned with those established by the National Conference on Weights and Measures in 1994.