I am not sure about others but as far as I am concerned... I daily pass by 04 round abouts and there are more than 10 Signs that I pass by. May be I am not that good, but not once, I am able to read it or figure out what these signs are.

I wonder who put them in middle of the round about (most crowded place on raod) and I wonder whether they expect someone to read it?

When you're through changing, you're through.