Reading Material at the DMV

I was recently at the DMV Express for over an hour to get a new license. 

This sign caught my eye ...

I am impressed with "THEIR" use of capital letters, even on words like "and" and "the" ... and most curious about why the word "YOUR" is both in caps and in quotes. Would you be completing and signing someone else's application?

Currently accepting explanations from "YOU." Go!