Deleting the Westbound carriageway of the A27 and all its associated tags and replacing it with a way simply tagged highway=trunk + oneway=yes is hardly a correction.

If your routing test does not work as expected, the solution is not to damage the OpenStreetMap database.

Please explain what you were trying to do and what you believe the problem with the OSM data was, *without* making edits which you do not understand.

Reverted in https://www.openstreetmap.org/changeset/152171143

