Signs I'd put out for track runners needing a rest (7)

I believe the answer is:

sidings

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'track runners needing a rest' is the definition.
I can't judge whether this definition defines the answer.

'signs i'd put out' is the wordplay.
'put out' indicates anagramming the letters.
'signs'+'id'='signsid'
'signsid' anagrammed gives 'SIDINGS'.

'for' is the link.

Can you help me to learn more?

(Another definition for sidings that I've seen is " railway stores".)

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

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