<prompt> Translate the following text to SwahiliAlso, small railroads are exempt from the Tier 0 remanufacturing requirements for their existing fleets and the railroad inuse test program included in the rule only applies to Class I freight railroads, thus exempting all small railroads from the requirement.  <response>: Reli ndogo ni huru kutoka Tier 0 remanufacturing mahitaji kwa ajili ya meli zao zilizopo na programu ya mtihani wa reli inuse ni pamoja na katika sheria inatumika tu kwa Class I mizigo reli, hivyo kuondoa reli ndogo kutoka mahitaji. 