Federation involved in some traffic congestion (4)

I believe the answer is:

fifa

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

'federation involved' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'some traffic congestion' is the wordplay.
'some' says to take the centre.
'congestion' becomes 'ifa' (I can't justify this - if you can you should believe this answer much more).
The middle of 'traffic' is 'f'.
'f'+'ifa'='FIFA'

'in' is the link.

Can you help me to learn more?

(Another definition for fifa that I've seen is " sports administration group?".)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app