Answer, you use the lavish bus turning circle the entrance to which is by the cars up ahead!
M , trams which aren't trams e.g. T2 , presunably buses 20 and some "other" services F2 which need further explanation. So where is route 85? Try inserting brain and looking for "Horaires" (Timetables). Now we have an 85 ...
Aha! T'is a school service and we know (well, we might know) that in France, School services are kept well away from the general public, usually with separate maps and timetables. With that useful revelation, we go back to the maps section ...
David's (illegal?) use of the bus turning circle was at Quéreville-la-Poterie, École Mendèz-France.
Pierre Mendès France (11 January 1907 to 18 October 1982) was a French politician who served as President of the Council of Ministers (equivalent to Prime Minister) in 1954-55.
It was under the government of Mendès France that France withdrew its military forces from Vietnam in 1954. He is known for his unusual habit of drinking milk during speeches to the chamber during his Prime Ministership.
The Mendèz-France family was large and widespread. The school may be named after a son who was a noted mathematician.
But fbb has cracked it. Dave's challenge accepted and conquered. Thanks to the interwebnet, determined research and, at times, a few good guesses.
But what are those Astuce services with the prefix "F"?