The most common and most likely answer to this crossword clue is the 8 letter word TRAILERS
I've seen this crossword clue in The Daily Telegraph
T
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A
I
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More clues leading to the result TRAILERS
Buddy explains!

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 TRAILERS mean?
TRAILERS noun- Someone who or something that trails.
- Part of an object which extends some distance beyond the main body of the object.
- An unpowered wheeled vehicle, not a caravan or camper, that is towed behind another, and used to carry equipment, etc, that cannot be carried in the leading vehicle.
- A furnished vehicle towed behind another, and used as a dwelling when stationary; a caravan; a camper.
- A prefabricated home that could be towed to a new destination but is typically permanently left in an area designated for such homes.
- A preview of a film, video game or TV show.
- A short blank segment of film at the end of a reel, for convenient insertion of the film in a projector.
- The final record of a list of data items, often identified by a key field with an otherwise invalid value that sorts last alphabetically (e.g., “ZZZZZ”) or numerically (“99999”); especially common in the context of punched cards, where the final card is called a trailer card.
- The last part of a packet, often containing a check sequence.
- To load on a trailer or to transport by trailer.