Arbitron and Clear Channel Sign Multi-Year Agreement for Portable People Meter Radio Ratings Services in 46 Markets

Arbitron Inc. (NYSE: ARB) today announced that Clear Channel Radio (“Clear Channel”), a division of Clear Channel Communications, Inc., has signed a multi-year agreement for Portable People MeterTM radio ratings services in 46 markets, as and when those services are rolled out by Arbitron. The agreement encompasses all Clear Channel radio stations in those markets that Arbitron has converted or is planning to convert to the Portable People Meter ratings methodology by the end of 2010.

The agreement expires December 31, 2011, and also extends until that date the current contract for diary-based radio ratings in each of the markets covered by the agreement that have not been converted to Portable People Meter radio ratings before the end of 2008, the expiration date of the current diary agreement with Clear Channel.

Clear Channel is Arbitron’s largest radio ratings subscriber and represented approximately 19 percent of Arbitron’s revenue in 2006.

By the end of 2010, Arbitron is scheduled to deploy the Portable People Meter in the top 50 markets in place of the paper and pencil diary method that the company has employed to collect radio audience estimates since 1965.