Someone finally uploaded Traffic: https://www.youtube.com/watch?v=qEuB0fFlI7g
Fun, but I have to say, I love Carl Stalling's renditions with the full orchestra much better.
Zamecnik wrote for Sam Fox, so "Traffic" was one of the SF cues picked up by the Capitol Hi-Q library. Capitol changed the names of many of the Sam Fox cues so it's labelled SF-225 Light Activity in Reel L-51. No composer credit.
It's the only Zamecnik cue I can pick out in the Hi-Q library. There are some fine cues by Lou De Francesco, Philippe Pares, Roger Roger and others.
Yowp
https://yowpyowp.blogspot.com