The most common and most likely answer to this crossword clue is the 7 letter word ONE-TWO
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More clues leading to the result ONE-TWO
Buddy explains!

The straight part
We know that "Passing movement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case passing movement = one-two.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ONE-TWO mean?
ONE-TWO noun- A quick one-touch play between two players.
- A one-two punch; two punches delivered in rapid succession
- Two things in short succession
- A race victory such that two (often both) cars of a constructor or team finish first and second in the race.