Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
This is an old revision of this page, as edited by Pedroperezhumberto (talk | contribs) at 11:57, 15 July 2024 (Undid revision 1234594485 by Hsparsity (talk) TfL timetables at bus stops served by route SL9 say the operator is "RATP Dev Transit London". Another reason is that the operator has traded as RATP Dev Transit London since 2021). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.
The route commenced on 7 December 2019, originally numbered X140, as part of a reorganisation of routes in the lead up to the opening of the Elizabeth line. Route X140 was introduced as a limited stop service between Harrow and Heathrow Central bus stations and as a partial replacement for the all stops route 140, which was withdrawn between Hayes & Harlington and Heathrow at the same time. Route X140 was initially operated by Metroline.
The route operates at a frequency of a bus every 12 minutes on weekdays and Saturdays and a bus every 15 minutes on Sundays. Between the hours of 23:00 and 07:00, the route is covered by an all stops night service, numbered N140, running every 30 minutes between Harrow Weald bus garage and Heathrow Central bus station.