ðə mˈoʊst kˈɑːmən sˈɪŋɡəl dˈɛk tˈaɪp ɪz ðɪ ˌælɪɡzˈændɚ dˈɛnɪs ɛnvˈaɪɹə tˈuːhˈʌndɹɪd, wɪð ˈeɪtiːn ɛɡzˈæmpəlz ɪn sˈɜːvɪs.
The most common single deck type is the Alexander Dennis Enviro200, with eighteen examples in service.