These Regulations amend the Non-Road Mobile Machinery (Emission of Gaseous and Particulate Pollutants) Regulations 1999 (S.I. 1999/1053) (“the 1999 Regulations”). They implement the provisions of European Parliament and Council Directive 2004/26/EC. That Directive amends Directive 1997/68/EC on the approximation of the laws of the member States relating to measures against the emission of gaseous and particulate pollutants from internal combustion engines to be installed in non-road mobile machinery, so as to impose new emissions limits on certain types of engine already covered by Directive 1997/68/EC and to extend that Directive’s scope to include engines installed in inland waterway vessels, locomotives and railcars.