bˈoːɹd tɹˈæks pɹəlˈɪfɚɹˌeɪɾᵻd ɪn pˈɑːɹt bɪkˈʌz ðeɪ wɜːɹ ˌɪnɛkspˈɛnsɪv tə kənstɹˈʌkt, bˌʌt ðeɪ lˈækt dˌʊɹɹəbˈɪlᵻɾi ænd ɹᵻkwˈaɪɚd ɐ ɡɹˈeɪt dˈiːl ʌv mˈeɪntənəns tə ɹᵻmˈeɪn jˈuːzəbəl.
Board tracks proliferated in part because they were inexpensive to construct, but they lacked durability and required a great deal of maintenance to remain usable.