What significant emission regulations were introduced by the EPA for diesel trucks manufactured after 2007?

The introduction of diesel particulate filters (DPF) in diesel trucks manufactured after 2007 signifies a major advancement in emission control technology mandated by the Environmental Protection Agency (EPA). The purpose of these filters is to significantly reduce the amount of particulate matter emitted from diesel engines. Particulate matter is a harmful pollutant that can affect air quality and public health, which is why regulations became increasingly strict.

When the EPA set these regulations, they aimed to decrease harmful emissions and improve air quality nationwide. Diesel particulate filters capture soot and other particulate emissions that are a byproduct of diesel combustion, thereby preventing them from being released into the atmosphere. In addition to DPF, other technologies, such as selective catalytic reduction (SCR) systems, were also implemented, but the DPF specifically addresses particulate emissions directly.

Implementing such technology was necessary to comply with the EPA's stricter emissions standards put in place for diesel engines, which ultimately helped to create cleaner air and a healthier environment.