Given the expansive area constituting the uniform fare sections, there are many routes that run only in the uniform fare sections and neither a fare table nor a machine to issue numbered tickets is provided for the buses dedicated for the uniform fare sections; consequently, it's considered that such an announcement is made to prevent the occurrence of the following phenomenon: when a person unfamiliar to the fact that fares depend on sections happens to get on a bus running on a multi-section route, the person gets off the bus without noticing that insufficient fare has been paid.
これは均一区間のエリアが広いこともあり、均一区間のみを走る路線が多く、また均一区間専用の車には運賃表や整理券発行器が取り付けられていないため、運賃が区間によって変わることが習慣付けられていない人がたまに多区間系統に乗って運賃の不足に気付かないまま降車してしまうことを防ぐためと思われる。