At a push, most people could ride one (4)

I believe the answer is:

bike

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

'ride one' is the definition.
'bike' can be an answer for 'ride' (biking is a kind of riding). I am not certain of the 'one' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for bike that I've seen before include "Cycle (colloq.)" , "vehicle" , "Bicycle (colloq.)" , "Take a ride" , "See 5" .)

I've seen this clue in the Evening Standard.

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