Arbitron Adjusts Portable People Meter Commercialization Schedule

Arbitron Inc. (NYSE: ARB) announced today an adjustment to the Portable People MeterTM commercialization schedule.

Four markets – Kansas City, San Antonio, Salt Lake City and Las Vegas – are now scheduled to commercialize with the December 2009 PPMTM survey report (November 12 to December 9), currently slated for release on December 31, 2009. Previously, these four markets were slated to commercialize with the release of the March 2010 PPM survey report. The final diary-based audience survey in these four markets will be the Summer 2009 survey (June 25 - September 16).

Five markets – Milwaukee, Charlotte, Columbus, Providence and Orlando – are now scheduled to commercialize with the release of the September 2010 PPM survey report in October. Previously, these five markets were scheduled to commercialize with the release of the June 2010 PPM survey report. The final diary-based audience report in these four markets will now be for the Spring 2010 survey (April 1 – June 23.)

The updated Portable People Meter commercialization schedule is available at: http://www.arbitron.com/portable_people_meters/PPM_rollout.htm