When the Tier rating program started in the U.S. in 1996, the goal was to reduce nitrogen oxide and particulate matter from the exhaust of diesel engines. Since then, engine technology has been ...
Fullerton, Calif.-based technology company Rail Propulsion Systems LLC (RPS), partnering with the North Carolina DOT, the North Carolina State Clean Tech Center and the Federal Highway Administration, ...
In 2004 the Environmental Protection Agency (EPA) signed the final rule introducing Tier 4 emission standards. The goals of the regulation are designed to preserve and improve health, but the rules ...
Since the EPA mandated low emissions on high-dollar construction equipment, most heavy equipment fleets are a mix of diesel-powered machines with engines of different Tier levels, including some newer ...
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