Your student fees support the RTD bus program for students. When you get your Buff OneCard you will receive a personalized RTD sticker. This sticker will be affixed to a plastic sleeve that is designed to hold your card. Your Buff OneCard student ID with valid RTD sticker will allow you to ride any regular RTD route in Metro Denver for free. This includes the skyRide service to Denver International Airport. Bus schedules and maps are available all over campus, so take advantage of this program.