The most common and most likely answer to this crossword clue is the 8 letter word CARAVANS
I've seen this crossword clue in Financial Times
C
A
R
A
V
A
N
S
More clues leading to the result CARAVANS
Buddy explains!
The straight part
We know that "Travellers" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case travellers = caravans.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 CARAVANS mean?
CARAVANS noun- A convoy or procession of travelers, their vehicles and cargo, and any pack animals, especially camels crossing a desert.
- A furnished vehicle towed behind a car, etc., and used as a dwelling when stationary.
- To travel in a caravan (procession).
- To travel and/or live in a caravan (vehicle).