'Don't' and 'Slightly Haunted': Mysterious Signs Confuse and Amuse Christchurch

Six strange signs that look like official city notices have appeared across Christchurch, New Zealand. They are confusing and delighting the city's residents. One sign on an empty building states it is "slightly haunted but manageable." Another on a busy street orders pedestrians to walk at exactly 2.83km/h. A third sign gives a simple, unexplained command: "don't." These baffling boards are not a new city council rule. They are a public art project. The artist says the goal is to challenge how seriously people accept authority and standard signage. The signs have sparked widespread discussion online, with many residents sharing photos and theories about their meaning.