Removed cars when train speed dies out (14)

I believe the answer is:

pedestrianised

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'removed cars when' is the definition.
I can't tell whether this defines the answer.

'train speed dies out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'train'+'speed'+'dies'='trainspeeddies'
'trainspeeddies' is an anagram of 'PEDESTRIANISED'.

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(Another definition for pedestrianised that I've seen is " with the wheels coming off".)

I've seen this clue in The Daily Express.

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