Symbols for Efficiency and Speed

In the UK too, and I saw this in Australia, there are these squiggly lines. The British roads that drive in the left have these squiggley lines which I never saw before. It looks like kind of the inner state of over by Lehigh but it's not towards a stop sign. And what's really strange to me is, and this is, I noticed these. If you have a speed bump, I was in Hawaii and it's called a speed table. And it can be called. There're three different words that are used that I know of in the US to identify one thing. So, you start to get different symbols and meanings. Those symbols are critical