ðə lˈɛdʒɪslətˌɪv ɹˈaʊt sˈɪstəm wʌz ɹᵻplˈeɪst baɪ ðə mˈɑːdɚn stˈeɪt ɹˈaʊt sˈɪstəm ɪn nˈaɪntiːnhˈʌndɹɪd twˈɛnti fˈoːɹ, æt wˌɪtʃ tˈaɪm mˈoʊst əv ɹˈaʊt fˈoːɹ wʌz dˈɛzɪɡnˌeɪɾᵻd ˌɛnwˈaɪ sˈɛvəntˌiːn, ɪŋklˈuːdɪŋ fɹʌm hˈɪnsdeɪl tə kjˈuːbə.
The legislative route system was replaced by the modern state route system in 1924, at which time most of Route 4 was designated NY 17, including from Hinsdale to Cuba.