Almost one year after first proposing the stricter vehicle emissions standards known as Tier 3, the US Environmental Protection Agency (EPA) today finalized the new levels. These restraints on ...

The Environmental Protection Agency (EPA) added a new word to the wider public lexicon today when it proposed new emission and fuel standards for cars and gasoline: Tier 3. This new regulation is ...

Cummins Inc. announced today that the mechanical B3.3 engine will move forward to meet ... by Cummins Emission Solutions to meet the EPA Tier 4 Final and equivalent emissions standards in Europe ...