One's hailed old reserve team (4)

I believe the answer is:

taxi

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'one's hailed' is the definition.
(a taxi may be hailed)

'old reserve team' is the wordplay.
'old reserve' becomes 'ta' (I've seen this in other clues. I am not sure about the 'old' bit.).
'team' becomes 'XI' (a football team, from Roman numerals for tt).
'ta'+'xi'='TAXI'

Can you help me to learn more?

(Other definitions for taxi that I've seen before include "Move along a runway" , "Rank occupant" , "Part of fleet" , "Handgun" , "I hail you!" .)

I've seen this clue in The Telegraph.

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