Geo-demographic mapping: This method provides audience statistics related to outdoor media locations, both geographically and demographically. It enables advertisers to efficiently reach their target audience.

Global positioning system (GPS): Highly accurate location systems which pinpoints structures in terms of latitude and longitude holding hand ñheld instruments that communicate with orbiting satellites.

Gross impressions: The total number of impression opportunities registered against the target audience by GRP Showings.

GRPs (Gross Rating Points): The total numbers of impressions delivered by a media buy, relative to the market population. GRPs for outdoor media generally refer to the daily effective circulation divided by the market population. One rating point represents a circulation equals to 1% of the market population.