You’re on a three-lane motorway. How should you overtake a slow-moving lorry in the middle lane if it’s showing this sign?

AB2701
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You're on a three-lane motorway. How should you overtake a slow-moving lorry in the middle lane if it's showing this sign?

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This sign is found on slow-moving or stationary works vehicles. If you wish to overtake it, do so on the left, as indicated. Be aware that there might be people working in the area.