The International Organisation for Standardisation (ISO) has drawn up standards on internal combustion engines which are widely applied in Member States.
Tharraing Eagraíocht Idirnáisiúnta na gCaighdeán (ISO) caighdeáin suas maidir le hinnill dócháin inmheánaigh, ar caighdeáin iad a chuirtear i bhfeidhm go forleathan sna Ballstáit.