ˌɛmdˈiː θˈɜːɾi wˈʌn ɪz ɐ pˈɑːɹt ʌvðə nˈæʃənəl hˈaɪweɪ sˈɪstəm æz ɐ pɹˈɪnsɪpəl ɑːɹtˈɪɹiəl fɹʌm stˈoʊn tʃˈæpəl ɹˈoʊd ˈiːst tʊ ˌɛmdˈiː wˈʌnhˈʌndɹɪd fˈoːɹɾi ɪn wˈɛstmɪnstɚ.
MD 31 is a part of the National Highway System as a principal arterial from Stone Chapel Road east to MD 140 in Westminster.