Atlanta subway passengers who looked through the dark windows of their moving train on Thursday saw glowing, full-motion ads for Dasani, the new bottled water from Coca-Cola. Thursday's launch of the unusual advertisement, originally scheduled for Sept. 11, the day of the terror attacks, was a low-key affair, but it may herald a new age in outdoor advertising.
City transit systems are emblazoning the dirt and graffiti-covered walls of subway tunnels with illuminated signs that, when seen from a speeding train, appear to be animated. The effect, similar to that of a flip book, is not unlike watching a 30-second television commercial.
"As you pass by at high speed, you see a full-fledged motion picture," said Matthew Gross, president of Submedia, the New York-based outdoor advertising company, which has installed 1,000 feet of light boxes between the Dunwoody and Sandy Springs stations on Atlanta's North Line. "We use a series of compressed images and are able to get an extremely high frame rate -- about 200 to 300 frames per second."
An offbeat and fast-growing phenomenon, "in-tunnel" systems began showing up this summer in Europe. Adidas and Coca-Cola, the first to experiment with them, bought space in the Budapest, Hungary and Athens transit systems through MotionPoster, a small company based in Oxfordshire, England. MotionPoster has recently announced contracts to install systems in Munich, Frankfurt and Seoul.
Many of the world's mass-transit systems are considering similar proposals. Surprisingly, interest remains high even after the attacks on the World Trade Center and Pentagon. "We really have not had any letup in interest from advertisers," said Gross. "No matter what happens, companies are still looking for a way to differentiate themselves."
In August, Submedia signed a contract with the Port Authority of New York and New Jersey to install a system on the PATH commuter rail line in Manhattan. Sidetrack Technologies, in Winnipeg, Manitoba, is setting up tunnel ads in the Kuala Lumpur, Malaysia, subway and has plans to bring at least two more systems to North America next year. All three companies are meeting with big-city transit representatives.
"Advertisers are using every opportunity they can find to communicate their marketing messages, to fight the clutter of advertising that surrounds us," said Sid Holt, editor-in-chief of Adweek magazine in an e-mail interview. "And outside of prison, I can't think of a more captive audience than subway riders."
Indeed, if in-tunnel media companies have anything in common, it's the belief that marketers must delve into previously unexplored territory to get consumers' attention.
Gross said advertisers could expect to pay US$35,000 to US$250,000 a month for in-tunnel media, depending on location and passenger traffic. The cost of Dasani's three-month run in Atlanta, he said, "is on the lower half of that scale."
Coca-Cola's subway ad is made up of saturated color images of cascading water. "It's a neat way to communicate in a targeted, closed environment," said Kellam Graitcer, Dasani's brand manager at Coca-Cola. Phactory Productions Inc, a New York design firm, created the advertisement itself.
"When you've got a brand new medium, people don't have anything that's been designed specifically for it," said Rob Walker, president of Sidetrack Technologies. "We can put images on both sides of the train so that the images can interact through the train."



