An important source of air pollutants also comes from the non-road sector (combustion machinery). This is covered by Non-Road Mobile Machinery (NRMM) which includes a variety of combustion engines installed in machines. These range from small handheld equipment (such as hedge trimmers, grass trimmers, chain saws, and similar devices), to construction machinery and generator sets, as well as railcars, locomotives, and inland waterway vessels.
Emissions from these engines are regulated before they are placed on the market by six directives:
The Commission adopted the 'Proposal for a Regulation on requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery' on 25 September 2014.
The new Regulation will replace a patchwork of 28 national laws. It will also repeal the current extremely complex directive that comprises 15 Annexes and has been amended eight times since its adoption in 1997.