Hey I Got a Question?

which squiggly lines in particular? We have loads of them! Zigzag lines by a zebra crossing and in front of schools etc mean you cant stop there or park there..
Sometimes the road is kind of hatched as again you aren't meant to be in that part unless you can't avoid it..

I'm commenting on this to see if anyone gives a definitive answer because I've not been able to find a satisfactory answer about them.

I thought it was supposed to be caution/slow.

If you look carefully you'll see that they are raised slightly. When driven over at the legal speed limit they induce an audible vibration in your vehicle. On long stretches of road you'll hear the national anthem of the country in which you are driving.