æz stˈeɪt dᵻpˈɑːɹtmənts ʌv tɹænspoːɹtˈeɪʃən ɪŋkɹˈiːsɪŋli stˈɑːpt spˈɛsᵻfˌaɪɪŋ bˈʌʔn̩ kˈɑːpi sˈaɪnz ɪn fˈeɪvɚɹ ʌv sˈaɪnz mˌeɪd wɪð ʃˈiːɾɪŋ, ɪt bɪkˌeɪm ʌnˌiːkənˈɑːmɪkəl tə meɪntˈeɪn pɹədˈʌkʃən ʌvðə mətˈɪɹiəlz ænd səplˈaɪz fɔːɹ mˌeɪkɪŋ bˈʌʔn̩ kˈɑːpi sˈaɪnz.
As state departments of transportation increasingly stopped specifying button copy signs in favor of signs made with sheeting, it became uneconomical to maintain production of the materials and supplies for making button copy signs.