From first scheduled departure, Saturday, 16 July - until further notice
(modified at 2022.07.14. 10:50)
From 16 July, the front-door-boarding-only policy applies at weekends on busline 133E on the Buda section between the Szent Gellért tér–Műegyetem M and the Nagytétény, Erdélyi utca stops and a valid ticket or pass is required to show upon boarding to the driver.