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