Abstract: System and method for providing vehicle-specific data to vehicles is provided. A preferred embodiment comprises downloading vehicle-specific data to mass-transit vehicles when vehicles are within a predetermined area, such as a garage, parking lot, gas station, or the like, via a wireless interface, such as a WiFi communications link. The vehicle-specific information may include route information, advertising information, or the like. In a preferred embodiment, the information is encrypted and compressed for transmission by an application server and decrypted and decompressed upon receipt. The data may also be divided into multiple blocks for transmission and reassembled upon receipt. Data integrity checks may be performed for each block and for the entire message.