Crossword Genius

Broken down bus means travelling light (8)


I believe the answer is:

'travelling light' is the definition.
(beams of light travelling from a source)

'broken down bus means' is the wordplay.
'broken down' is an anagram indicator.
'busmeans' anagrammed gives 'SUNBEAMS'.

(Other definitions for sunbeams that I've seen before include "daylight?", "They provide light".)

I've seen this clue in The Guardian.