This AR 12 was a precursor to U.S. Route 62 in Arkansas, which supplanted AR 12 almost entirely in 1930.
ðɪs ˌeɪˈɑːɹ twˈɛlv wʌzɐ pɹɪkˈɜːsɚ tə jˈuː.ˈɛs. ɹˈaʊt sˈɪksti tˈuː ɪn ˈɑːɹkənsˌɔː, wˌɪtʃ səplˈæntᵻd ˌeɪˈɑːɹ twˈɛlv ˈɔːlmoʊst ɛntˈaɪɚli ɪn nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi.