To make a successful billboard, you need to have a creative and unique message. The message should be catchy and able to inspire a call to action. The best billboards use a combination of text and imagery to tell a story. Moreover, you can use emotional marketing strategies such as humor to attract attention. For example, a Colorado State Patrol billboard may warn about the effects of tailgating while an Online Stationery billboard might advertise strong tape. Coca-Cola, on the other...