Fire danger signs are commonly seen around New Zealand, particularly in rural areas.
They have been around for so long they have passed into popular culture and/or and have been adapted for other uses.
Unfortunately this means that they probably don't have the impact they once had. We were away when the Port Hills fire happened in 2017, but the images we saw (the following are from the Christchurch City Council website) were horrifying. We are having another hot, dry summer and it is worrying to look around the Port Hills and see so much tinder. Though I am sure any response would be managed better this time around.