A recent study of greenhouse gas and emissions reporting methods by the American Transportation Research Institute (ATRI) found “big picture” inconsistencies. For example, the trucking industry uses the Environmental Protection Agency’s SmartWay Partnership model, which results in only small calculations differences. However, simply judging the eco-friendliness of a fleet based on those numbers would be misleading, according to the study, as it accounts for only the on-road vehicle fleet. Inconsistent tools for measuring emissions from biodiesel, refrigerants and electricity could be refined and more accurately quantify the carbon footprint of the trucking industry, ATRI concluded.

The American Transportation Research Institute released results of its study on greenhouse gas reporting tools and emissions models.

“While the reporting tools are generally similar,” ATRI said, “there are differences between accounting methods which can impact the reported level of emissions.”

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