<prompt> Translate the following text to EnglishKanuni ya mwisho inarekebisha sehemu za uzalishaji wa bomba la mwisho la Utaratibu wa Mtihani wa Shirikisho kwa magari ya kazi nyepesi na malori ya kazi nyepesi.  <response>: The final rule revises the tailpipe emission portions of the Federal Test Procedure for light-duty vehicles and light-duty trucks. 