30 and 0.50 g-hp-hr for the same factors respectively.

The actions taken by the EPA in this regard is justified given the fact that greenhouse gases account for 90 to 99% chance of global warming. Some of the prominent greenhouse gases that contribute to this problem are carbon dioxide, methane, nitrous oxide and HFCs. In the U.S., emission from heavy-duty vehicles on highways account for 28% of the problem. So, the EPA has to intervene at some point to control these emissions and this is the right way forward. This rule will discourage manufacturers from introducing vehicles that are high on performance, but continue to emit high amounts of greenhouse gases such as nitrogen oxide.

Most manufacturers today have the technology to reduce these emissions and it is a matter of personal choice whether they want to use the technology or not for a cleaner air. Some manufacturers do not...
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