The A78 Scottish trunk road runs from Greenock on the River Clyde, just to the west of Glasgow, down the Ayrshire coast to Prestwick. The road incorporates a multi-laned roundabout in Greenock itself. This well used roundabout is subjected to high levels of wear from a range of vehicles including HGVs accessing the towns busy port and cars heading to Glasgow Airport. Amey had been monitoring the thermoplastic line markings used on the rou

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