Bearing of one stopping aggression on road? (8)

I believe the answer is:

carriage

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'bearing' is the definition.
(someone's stance or posture)

I can't explain the rest of the clue.

(Other definitions for carriage that I've seen before include "Coach - bearing" , "Bodily posture or wheeled vehicle" , "Railway passenger coach" , "Horse-drawn passenger vehicle" , "Deportment; vehicle" .)

I've seen this clue in The Times.

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