fr_document_number,regs_document_id 2021-15052,FMCSA-2008-0355-0028 2021-15052,FMCSA-2011-0089-0012 2021-15052,FMCSA-2014-0381-0026 2021-15052,FMCSA-2017-0253-0005 2021-15052,FMCSA-2018-0057-0005 2021-15052,FMCSA-2019-0028-0004