Abstract: A system which includes an electronic sign located in a vehicle of a passenger transportation system with the capability of showing letters, numbers and graphs. The electronic sign is equipped with a satellite based positioning system which enables specific information uploading for a particular geographical region for displaying information, news, publicity, advertisement, and services for the passenger. The electronic sign capability of determining its position allows it to locate the appropriate “uploading sites,” which automatically update information for the geographic position where the information should be addressed for any number of signs located in that geographic position. This makes it simple to advertise or inform the nearby population in a previously chosen target region.