The most common and most likely answer to this crossword clue is the 5 plus 5 letter word SPEED LIMIT
S
P
E
E
D
L
I
M
I
T
More clues leading to the result SPEED LIMIT
- Simple diet somehow a restriction on travellers
- It's meant to stop you going at any rate
- Develop simple diet — you might be punished for breaking it!
- Fine results when going beyond this surprisingly simple diet?
- Rule facing drivers left in M1 despite getting diverted
- Prepare simple diet for maximum rate by law
- Thin binding weed — it’s what’s observed on road
- Simple edit transformed legal restriction
- Stepping on it may break it
- Drug check enforced by traffic police
Buddy explains!
The straight part
We know that "Change down, perhaps, having gone through it?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case change down, perhaps, having gone through it? = speed limit.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.