According to the Outdoor Media Association (OMA), the outdoor advertising industry accumulated net revenue of $188.3 million in its half-yearly results for 2009, a considerable drop from $217.7m the previous year.
"The results reflect the general economic downturn being experienced in the advertising market," said OMA chief executive Helen Willoughby.
The half-yearly results were marked against new categories for the industry: Retail, Transport, Roadside- billboards, and Roadside - other. Previously, the OMA reported its revenue under the categories of Large Format, Posters, Street Furniture and Transit.