Non-road engines

In 2004, the Ministry of Environment began regulating exhaust emissions from non-road engines, including construction machinery such as excavators, loaders, forklifts, cranes, bulldozers, backhoes and rollers. This first exhaust emission standard for non-road diesel engines was based on the U.S. Tier 1 standard.

From 2005, the government adopted emissions standards based on the U.S. Tier 2 standards. In 2009, the emission standards were tightened by adopting the U.S. Tier 3 for construction machinery. In 2013, the government included agricultural equipment in these emission regulations.

The emissions standards for non-road or off-road engines were further tightened by adopting the U.S. Tier 4 final requirements from 2015, skipping the U.S. Tier 4 intermediate stage. The tabl