Cryptic crossword clue
On the road, you might see them record behind Bob 1-6

The most common and most likely answer to this crossword clue is the 8 letter word L-PLATES

I've seen this crossword clue in The Guardian
L
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P
L
A
T
E
S

Buddy explains!

The straight part
We know that "On the road, you might see them" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case on the road, you might see them = l-plates.
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.

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