Observations from a Canadian visiting New Zealand:

@sundogplanets Your idea of supper matches that of what we had at the end of the day. A.K.A. Dinner.

@sundogplanets I love so much the dumping rubbish one!

@sundogplanets Have you heard slip-slop-slap? Not as funny as "don't be a tosser" but another bit of local culture.

@sundogplanets As a French person, I can’t tell you how funny it is to read “big bite” and “breeding season” on the same poster.

@sundogplanets don't know if you're still around there, but i had excellent filter coffee at Daily Daily Coffeemakers when I was in Auckland

@sundogplanets

Honesty is certainly the best policy.

@sundogplanets I love the rubbish dumping one. Actually I thought of doing something like that autonomously but insulting litterers in rhyme.

@sundogplanets "tosser" is a nice piece of wordplay.

@adelinej @sundogplanets Me too! Good idea for our mayor to copy.

@sundogplanets I imagine you can reuse the "Don't be a tosser" sign in your presentations

@sundogplanets The precautionary ones just make sense. The clearer the better!

(Honestly, the same goes for the rubbish one - if you can’t think of that yourself you obviously got kind of a thick skull)

@sundogplanets the dumping one is epic

@sundogplanets
If you like the signs, there are also some classic TV adverts you should check out.

For example 'blazed', by the incomparable Taika Waititi:
https://www.nzonscreen.com/title/blazed-drug-driving-2013

@sundogplanets have you met Bas yet? He's everywhere around Mt Taranaki

@sundogplanets also keep an eye out once you get on the south Island, lots of crazy road signs there

@sundogplanets Our motel welcome folder in Whitianga had instructions for actions after a tsunami warning. "Drive north out of town, then uphill. We will see you there, we will not be staying."

@oseiler @sundogplanets he really is, though sometimes at other places it's his colleagues. I saw a colleague on the way to Angelus Hut.

@oseiler @sundogplanets related

@va2lam good to know - haven't been there yet

@va2lam @sundogplanets it was a really good thing when I took the kids up and we'd stop and got the youngest to do the Bas check.
On the other hand I've seen way too many mountain runners without any gear and their exhausted kids in tow or tourists starting late with a predicted incoming weather change who had no idea about that, and especially the northern approach features plenty of cliffs not too far from the track.
It seems they've found a good balance with these signs.