<prompt> Translate the following text to EnglishMabadiliko ya uwezekano yalifikiriwa na kujadiliwa katika hatua ya kuunda sheria iliyopendekezwa, na sheria ya mwisho inaelezea uamuzi wa NHTSA kwamba hakukuwa na mbadala kwa kiwango kilichopitishwa.  <response>: Potential alternatives were considered and discussed at the proposed rulemaking stage, and the final rulemaking describes NHTSAs determination that there was no alternative to the standard adopted. 