2 Weeks of Advertising on a Digital Billboard of your Choice. Billboards are large outdoor advertising displays that deliver exposure to your audience 24 hours a day, 7 days a week. Lamar offers billboard inventory across the U.S. in a variety of sizes and formats. According to Nielsen, nearly 90% of consumers have noticed a billboard advertisement in the past month. Large-format advertising structures located on major highways, expressways and primary arteries. Visible to drivers, commuters, and long distance travelers. Commands audience attention with three-dimensional designs, moving parts, and extensions. Covers more ground by moving your advertisement from one bulletin location to another at stated intervals (usually every 60 to 90 days) with our rotary bulletin package.