Routes 100, 101 and 102 are for connecting famous sightseeing spots, such as Rokuon-ji Temple, Jisho-ji Temple and Kiyomizu-dera Temple, with major railway stations, and are operated as 'express' buses that stop only at major bus stops (they're called 'express' buses, but it isn't necessary to pay any extra express fare to ride them).
「100」「101」「102」は鹿苑寺や慈照寺、清水寺といった有名な観光地と、主要駅を結ぶ系統で、主要停留所のみ停車する「急行」として運行されている（「急行」を名乗っているが急行料金は必要ない）。