OOH glossary · Measurement
Target rating points (TRP)
Target rating points (TRPs) are like GRPs but count only impressions from a chosen audience.
OAAA and Geopath define TRPs as in-market impressions from a target audience. They are shown as a percent of the market population.
TRPs help when a buyer cares about one group, like new parents or truck owners. OAAA best practice is to show both GRP and TRP levels on sales documents.