A roadblock ad in digital marketing is a full screen ad that is displayed before any pagePageA document having a specific URL and comprised of a set of associated files. A…//read more  content. This ad type is similar to a pre-roll in digital video advertising. The roadblock ad is very similar to the interstitialInterstitialAds that appear between two content pages. Also known as transition ads,…//read more  ad. However, the roadblock occurs before the first page of content, while the interstitial occurs between pages during user interaction with the site.