Out of Home Advertising

Out-of-home advertising (or outdoor advertising) is made up of more than 100 different formats, totaling $6.99 billion in annual revenues in 2008 in the USA. Outdoor advertising is essentially any type of advertising that reaches the consumer while he or she is outside the home. This is in contrast with broadcast, print, and Internet advertising.

Out of home advertising, therefore, is focused on marketing to consumers when they are "on the go" in public places, in transit, waiting (such as in a medical office), and/or in specific commercial locations (such as in a retail venue). Outdoor advertising formats fall into four main categories: billboards, street furniture, transit, and alternative.

Sources: Wikipedia.org Out of Home Advertising