Train chaps to be drivers (8)

I believe the answer is:

coachmen

'drivers' is the definition.
(coachman is a kind of driver)

'train chaps' is the wordplay.
'train' becomes 'coach' (synonyms).
'chaps' becomes 'men' (chap means a man).
'coach'+'men'='COACHMEN'

'to be' is the link.

(Other definitions for coachmen that I've seen before include "Carriage drivers" , "riders" .)

I've seen this clue in The Globe and Mail.

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