I propose you to see traffic in Bucharest from 1939 to late '90's. Even some of scens are taking from movies, you will get a general ideea of the vehicles (not only automobiles) that runed in here:
1939:
https://www.youtube.com/watch?v=uidBDF3n9PE
1941: some of the images are in colours
https://www.youtube.com/watch?v=ShRXp73jMhE
in the begining you can spot a bunch of 3 colours traffic semaphore (a novelty in Bucharest back then):
https://www.youtube.com/watch?v=ClDDf-Qt74M
Some very few scenes from 1955. You can see probably one of the 1st women from Bucharest that drove a tram (streetcar):
https://www.youtube.com/watch?v=8Cz6OVOgM2s
1960 see begining, trolleybuses around minute 36 and the end. Not too many scens, but it is colours:
https://www.youtube.com/watch?v=Dzj0yhZXSpM
1967 (part one of the movie):
https://www.youtube.com/watch?v=c9GpvJZXS0w
1977 (not only Bucharest):
https://www.youtube.com/watch?v=LwxulF0Iby8
1987:
https://www.youtube.com/watch?v=WNi4-1FzEKI
1990:
https://www.youtube.com/watch?v=MLZDpwD-NI4
1993:
https://www.youtube.com/watch?v=i06QsJfueBk&t=1533s
1994:
https://www.youtube.com/watch?v=e2D4ftriM2c&t=309s
1996:
https://www.youtube.com/watch?v=PNFjbVP9j4U
https://www.youtube.com/watch?v=6q43kJvitJw
1997 (not only Bucharest):
https://www.youtube.com/watch?v=9BMKvXEtgHg