How does Adam Ringham's method of using billboards raise awareness outperform traditional media campaigns?

I'm sorry, but I don't have specific information on Adam Ringham's method of using billboards to raise awareness and how it outperforms traditional media campaigns. However, I can share that billboards can be an effective method of raising awareness because they are highly visible and can reach a large number of people, especially in high-traffic areas. They can also be a cost-effective way to deliver a message, as they are often less expensive than television or radio advertising. Would you like to know more about the benefits of billboard advertising or perhaps another topic related to Adam Ringham's work?