Bus advertising is a popular way for advertisers to reach the public in metropolitan areas. Ads are placed in bus shelters or on the backs of benches at stops. A hoarding is a large outdoor advertising structure, typically found in high traffic areas such as alongside busy roads. Hoardings present large advertisements to passing pedestrians and drivers. Typically showing large, witty slogans and distinctive visuals, hoardings are highly visible in the top designated market areas. Hoarding are the largest, most impact. Standard-size hoarding, Located primarily on major highways, expressways or principal arterials, command high-density consumer exposure (mostly to vehicular traffic). Bulletins afford greatest visibility due not only to their size, but because they allow creative "customizing" through extensions and embellishments.