The first-ever sound-based track warning system, known as The Audible Alert Track Warning System, will make a full-field debut in the ASA Racing Series on Saturday, August 2, with the Meijer 250 presented by BFGoodrich Tires at Berlin Raceway in Marne, Mich. It will mark the first time the system has been used by a nationally touring series. The Audible Alert Track Warning System, manufactured by Invader Technologies of Denver, Colo., sends a short audible tone to notify every driver of changing track conditions and associated flags at exactly the same time. The system utilizes three distinct different tones that can be used for a green, yellow and red flag condition. Once the drivers have heard the tones a few times they are able to easily identify which tone means what flag without any confusion. ASA will only use the system for yellow flag conditions.( ASA Racing PR )(7-25-2003)
