As the transfer from substitute-fuel cars to gasoline cars had become possible since 1949 thanks to the improved oil supply, many companies across the country applied for licenses as sightseeing bus operators; in 1950, Kyoto Bus also applied for a license and introduced its general reserve passenger bus business in November of that year.
1949年ごろから好転し始めた石油事情は代燃車からガソリン車への転換を可能とし、全国的に観光バス部門開設の申請が相次いたが、京都バスも1950年、新規免許申請に踏み切り、11月に一般貸切旅客自動車運送事業を営業開始した。