FMCSA DOT Acronyms – “X” X X12 – Accredited Standards Committee X12, the ANSI standard group for EDI XML – eXtensible Markup Language Related posts: FMCSA DOT Acronyms – “F” FMCSA DOT Acronyms – “E” FMCSA DOT Acronyms – “P” FMCSA DOT Acronyms – “A”