Those rounded bumps on the painted lane dividers have a special name!
We see them every day but only know them as “the round bumps on the painted lane dividers that make noise and make my car feel funny when I drive over them”.
Well, good news for you is that you are about to learn their real name. Are you ready? Botts’ dots!Botts’ dots are those round non-reflective raised pavement markers you tend to see at most of the roads you tend to travel in your car every day.
They are named after their creator; Dr. Elbert Dysart Botts, who created these so that they could be used along with reflective, raised pavement markers, to mark lanes on highways and certain roads!
<a data-cke-saved-href="http://en.wikipedia.org/wiki/Botts" href="http://en.wikipedia.org/wiki/Botts" _dots'="" target="_new">(Source)