Revolutionary construction for a tram (5)

I believe the answer is:

marat

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'revolutionary' is the definition.
(French revolutionary Jean-Paul Marat)

'construction for a tram' is the wordplay.
'a tram' can be anagrammed to 'MARAT'.
But, I'm not clear how this is indicated.

Can you help me to learn more?

(Other definitions for marat that I've seen before include "revolutionary stabbed" , "murdered radical" , "Jean Paul -, assassinated French revolutionary" , "French revolutionary politician" , "Charlotte Corday murdered him in his bath" .)

I've seen this clue in the Evening Standard.

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