Train's speed confused walkers (11)

I believe the answer is:

pedestrians

'walkers' is the definition.
('pedestrian' can be a synonym of 'walker')

'train's speed confused' is the wordplay.
'confused' is an anagram indicator.
'trains'+'speed'='trainsspeed'
'trainsspeed' anagrammed gives 'PEDESTRIANS'.

(Another definition for pedestrians that I've seen is " those making slow progress?".)

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