In the sections where many buses are operated, one of the lanes is set for exclusive use by buses during the morning and evening rush hours, but so far the provision of them hasn't been effective because general vehicles run or park in the lanes, violating the rule (particularly around Shijo-Kawaramachi Station on the weekends, one of the lanes is entirely occupied by vehicles illegally parked there, and confrontations with police officers are always a concern, thus constituting a big obstacle in the operation of buses as scheduled).
バスの本数の多い区間では朝夕ラッシュ時にバスレーンを設けてはいるが、違反一般車両の流入や違法駐車車両であまり効果をあげていない（特に四条河原町周辺では週末になると1車線が違法駐車車両で埋め尽くされ、取り締まる警察との睨み合い状態と化しているほどであり、バス路線の定時運行の大きな障害となっている）。