NOx reductions and fuel economy
Looks like NOx reduction may once again be the target of the U.S. Environmental Protection Agency. The agency is responding to petitions from state and local governmental agencies and other organizations that want to see further reductions in NOx in commercial vehicles.
NOx standards for trucks were last set 16 years ago and agencies such as the California Air Resources Board say there are new technologies available to reduce NOx emissions further.
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Source:: http://fleetowner.com/fuel/nox-reductions-and-fuel-economy
