More secure way to collect fares (5)

I believe the answer is:

safer

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'more secure' is the definition.
('safe' can be similar in meaning to 'secure')

'way to collect fares' is the wordplay.
'fares' anagrams to 'SAFER'.
Though, I'm not clear how this is indicated.

Can you help me to learn more?

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

I've seen this clue in the Evening Standard.

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