There have already been threads on things that you used to see on BR, the London Underground, mainland European railways and UK buses that you don't see today, and I thought the Paris Metro warranted a thread of its own. How many things can you think of that you used to see on the Paris Metro that you no longer see today?
Here are a few to start with:
First class cars (which I think were abolished on the Metro in 1991 and on the RER and SNCF suburban services in Greater Paris in 1999)
Portillons automatiques - Automatic gates at platform entrances that closed each time a train arrived and opened as soon as the train had left, to stop people from getting on the train at the last minute and thereby preventing overcrowding (some stations still had these in situ in the mid to late 1980s when I first went to Paris, but I don't think they were still in use by then - I believe that they largely fell out of use by about the 1970s and were latterly used only in peak hours)
Manual ticket inspectors ("poinçonneurs/-euses") at platform entrances and old-style non-encoded tickets until the early 1970s when magnetic stripe tickets and automatic ticket gates were introduced. (You still occasionally see teams of inspectors doing manual checks in the passageways and by the station exit doors, though.)
Overhead wires (I believe that these were for use by works trains rather than passenger trains - again still in situ on some lines and at some stations in the 1980s)
Dubo - Dubon - Dubonnet adverts on station platforms.
Sprague stock trains which had:
At least two guards per train, one of whom would blow a horn to warn passengers that the doors were about to close (instead of the high-pitched hum of today)
Tungsten interior lighting
Wooden seats in 2nd class and leather seats in 1st
Green livery for 2nd class and red for 1st.
Here are a few to start with:
First class cars (which I think were abolished on the Metro in 1991 and on the RER and SNCF suburban services in Greater Paris in 1999)
Portillons automatiques - Automatic gates at platform entrances that closed each time a train arrived and opened as soon as the train had left, to stop people from getting on the train at the last minute and thereby preventing overcrowding (some stations still had these in situ in the mid to late 1980s when I first went to Paris, but I don't think they were still in use by then - I believe that they largely fell out of use by about the 1970s and were latterly used only in peak hours)
Manual ticket inspectors ("poinçonneurs/-euses") at platform entrances and old-style non-encoded tickets until the early 1970s when magnetic stripe tickets and automatic ticket gates were introduced. (You still occasionally see teams of inspectors doing manual checks in the passageways and by the station exit doors, though.)
Overhead wires (I believe that these were for use by works trains rather than passenger trains - again still in situ on some lines and at some stations in the 1980s)
Dubo - Dubon - Dubonnet adverts on station platforms.
Sprague stock trains which had:
At least two guards per train, one of whom would blow a horn to warn passengers that the doors were about to close (instead of the high-pitched hum of today)
Tungsten interior lighting
Wooden seats in 2nd class and leather seats in 1st
Green livery for 2nd class and red for 1st.