CC Traffic And BMW Speed Things Up
March 11, 2009 at 6:50 AM (PT)
CLEAR CHANNEL and BMW successfully tested a new algorithm that will enable CLEAR CHANNEL to accelerate its traffic-data service over HD Radio stations, reports TWICE.COM. CLEAR CHANNEL will offer the speedier service sometime later this year.
By mating a new algorithm with HD Radio, CLEAR CHANNEL radio stations could transmit a greater volume of data at higher speeds, delivering "current and predicted traffic patterns, speeds and flows almost instantaneously," the companies said. This increased performance would enable CLEAR CHANNEL to expand its traffic service to include traffic-flow predictions and more precise location referencing, the companies added.
In a proof-of-concept exercise, BMW equipped a BMW 5 Series with custom hardware and software, including an HD Radio data tuner, and drove it throughout the PHILADELPHIA metro area. The more efficient TPEG/TFP encoding protocol made it possible to transmit rush-hour traffic information for the entire metro area in just 14 seconds using only 52 messages.
CLEAR CHANNEL began transmitting traffic data via HD Radio in 48 of the largest U.S. metropolitan areas in 2007, but the first device capable of receiving the service -- a Dual-brand portable naviation device -- wasn’t announced until early this year. CLEAR CHANNEL’s traffic service is currently available in 50 markets via analog FM and HD Radio channels.