Signs

I've been watching out for signs and logos for a while and here are four very lively ones found in Hong Kong.

Here's some interpretation with the text taken away from the signs:

blue sign: In case of landslide, run away from the dinosaur eggs or run for the cliff
greenish-yellow sign: Ladies, Gents, Disabled, ...?...
black sign: 'It's more fun with your back down the water slide, wheeeeeeeeeeeee'
yellow sign: 'pk' quite literally