əpˌɑːn ɹˌiːdˌɛzɪɡnˈeɪʃən ɪn nˈaɪntiːnhˈʌndɹɪd twˈɛnti sˈɪks, ˈɑːɹkənsˌɔː hˈaɪweɪ twˈɛlv wʌzðə mˈeɪdʒɚɹ ˈiːst wˈɛst ɹˈaʊt ʌv nˈɔːɹθ ˈɑːɹkənsˌɔː, ɹˈʌnɪŋ fɹʌm ˌoʊklɐhˈoʊmə tʊ ˈæʃ flˈæt vˈaɪə hˈæɹɪsən.
Upon redesignation in 1926, Arkansas Highway 12 was the major east–west route of north Arkansas, running from Oklahoma to Ash Flat via Harrison.