The way to make a billboard ad most memorable to the public and how to portray that message is to understand what story you are telling in the first place!
the way to success
The size, color and font of your text drastically impacts how far away your billboard sign can be viewed from!
Never use a billboard campaign as the main, or only, advertising method but rather to spread awareness and as a support channel for your overall marketing plan.
Knowing who your target market is for your billboard message will help decide where it should be seen in order to maximize the potency of your campaign!