Arbitron Inc. Begins Trading On New York Stock Exchange; Leading U.S. Media Research Company Separates from Ceridian Corporation in Reverse-Spin.

Business Editors

NEW YORK--(BUSINESS WIRE)--April 2, 2001

Arbitron Inc. (NYSE:ARB), a leading international media and marketing research firm, announced today that its shares of common stock began trading on the New York Stock Exchange under the symbol ARB.

Arbitron Inc. provides media and marketing research services to radio and television broadcasters; cable companies; newspapers; advertisers and advertising agencies; magazines; newspapers and the online industry in the United States and Europe. On March 30, Arbitron became independent from its former parent company, Ceridian Corporation (NYSE:CEN), through a reverse spin-off. Arbitron marked the milestone by ringing the closing bell at the New York Stock Exchange.

"As an independent company that is focused on the media industry and its needs, Arbitron is ready to unlock all of the possibilities inherent in the rapid growth and change taking place in the industry we serve," said Stephen Morris, chief executive officer and president, Arbitron Inc. "Along with our proven, very attractive business model, as an independent company we now have a greater ability to pursue the strategies that we hope will make us a global leader in media information. I am enthusiastic about Arbitron's prospects and our ability to execute our strategies for growth."

In October 2000, the company announced a strategic reorganization, establishing three operating groups: U.S. Media Services, Portable People Meter Development and Webcast Services.

Arbitron's U.S. Media Services measures radio audiences in more than 280 local markets across the United States. It surveys the retail, media and product patterns of local market consumers through its Scarborough Research joint venture with VNU Marketing Information and other services. U.S. Media Services also provides software for analyzing media audience and marketing information.

"As a respected and well-established media research company, our information is a universally accepted currency for broadcasters, advertisers and agencies," said Mr. Morris. "While the core of our business has been providing ratings and consumer research for the radio industry, we are also developing new services and technologies that we intend to use to fuel an expansion into additional media and markets and contribute to continued growth of our core business."

Arbitron's Portable People Meter Development division is developing a revolutionary new technology for radio, television and cable TV audience measurement. The Portable People Meter is a pager-sized device which is carried by consumers to electronically measure their exposure to broadcast radio, television and cable as well as webcasts. The technology has successfully completed field testing in 2000 in Manchester, England. Currently, Arbitron is conducting its first U.S. market trial of the Portable People Meter in the Philadelphia television market.

Arbitron's Webcast Services unit is the world's first streaming media audience ratings service, which debuted in December 1999. Arbitron Webcast Services measures streamed audio and video content on the Internet, which helps webcasters demonstrate the value of their online audiences. In addition, this division also provides bi-annual industry studies for the webcasting industry.

About Arbitron

Arbitron Inc. (www.arbitron.com) is an international media and marketing research firm serving radio and television broadcasters; cable companies; advertisers and advertising agencies; magazines; newspapers and the online industry in the United States and Europe.

Arbitron's core businesses are measuring radio audiences in local markets across the United States; surveying the retail, media and product patterns of local market consumers; and providing application software used for analyzing media audience and marketing information. Arbitron Webcast Services measures the audiences of audio and video content on the Internet, commonly known as webcasts.

Arbitron's marketing and business units are supported by a world-renowned research and technology organization located in Columbia, Maryland. Arbitron employs approximately 700 full-time employees; its executive offices are located in New York City.

Arbitron Webcast Ratings is a service mark of Arbitron Inc. All product names used are trademarks or registered trademarks of their respective owners. This press release is available on the Arbitron Web site at www.arbitron.com and the KCSA Web site at www.kcsa.com

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The statements regarding Arbitron in this release that are not historical in nature, particularly those that utilize terminology such as "may," "will," "should," "likely," "expects," "anticipates," "estimates," "believes" or "plans," or comparable terminology, are forward-looking statements based on current expectations about future events, which Arbitron has derived from the information currently available to it. These forward-looking statements involve known and unknown risks and uncertainties that may cause our results to be materially different from results implied in such forward-looking statements. These risks and uncertainties include whether we will be able to:

- realize the benefits we expect to achieve from the spin-off;

- successfully execute our business strategies, including timely implementation
of our Portable People Meter(TM) and our Webcast Ratings(TM) services, as well
as expansion of international operations;

- continue to benefit from further consolidation in the radio industry; and

- keep up with rapidly changing technological needs of our customer base,
including creating new products and services that meet these needs.

Additional important factors known to Arbitron that could cause forward-looking statements to turn out to be incorrect are identified and discussed from time to time in Arbitron's filings with the Securities and Exchange Commission, including in particular the risk factors discussed under the caption "ITEM 1. BUSINESS - Business Risks" in our Annual Report on Form 10-K, which discussion is incorporated herein by reference.

The forward-looking statements contained in this release speak only as of the date hereof, and Arbitron undertakes no obligation to correct or update any forward-looking statements, whether as a result of new information, future events or otherwise