Give at least one example of a regulatory sign.

Square with black lettering on a white background such as speed limit signs.  

Octagon, triangle, square with white lettering on a red background such as STOP, YIELD, DO NOT ENTER or WRONG WAY sign.  

Square with black and red symbols such as no U-Turn arrow sign.

that's just a list of some of  regulatory signs but there are so much more regulatory signs are just the signs that you see when driving

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.