More reliable collection of fares (5)

I believe the answer is:

safer

I'm a little stuck... Click here to teach me more about this clue!

'more reliable' is the definition.
(I've seen this in another clue)

'collection of fares' is the wordplay.
'fares' anagrams to 'SAFER'.
However, I am not clear how the anagram is indicated.

Can you help me to learn more?

(Other definitions for safer that I've seen before include "Not so hairy" , "Less endangered" , "more conservative" , "Fears (anag)" , "Less risky" .)

I've seen this clue in the Evening Standard.

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