Digital signage system is perfect for public transportation. The bulk of advertisements used on public transportation printed pieces. A lot then are back-light and can run up to $20 a square foot. On a transit line, the person viewing the advertisements doesn't have the option of turning the channel, setting TiVo to skip them or blocking ads with a web browser. This means the message will get delivered.
Transit increasingly uses new media and technologies that may offer additional opportunities for advertisers. Sales of advertisements in public transit facilities and vehicles is growing by 7% a year.