ɚɹˈɪdʒɪnəli bˈɪlt tə ɹᵻlˈiːv ɐ ʃˈɔːɹɾɪdʒ ʌv ɡˈɑːɹdz vˈænz ænd jˈuːzd ˌɔn ɹˈʊɹɹəl bɹˈæntʃ lˈaɪnz ɪn plˈeɪs əvə sˈɛpɹət kˈæɹɪdʒ ænd ɡˈɑːɹdz vˈæn, ðə lˈeɪɾɚɹ ˌeɪˈɛl kˈɑːɹvænz wɜː jˈuːzd ɪn səbˈɜːbən sˈɜːvɪs ˈoʊnli.
Originally built to relieve a shortage of guard's vans and used on rural branch lines in place of a separate carriage and guard's van, the later AL carvans were used in suburban service only.