The Regional Transportation District (RTD) is celebrating the first anniversary of the University of Colorado A Line. (Yes, they had their fair share of troubles, but there is still much to celebrate.) They will mark the occasion with a rider appreciation event on Friday, April 21 at Union Station, Peoria Station and Denver Airport Station. At these stations, passengers will receive complimentary light refreshments and giveaways. Here is the early morning schedule: Union Station (Track 1 platform) from 6:30 a.m. to 8:30 a.m.; Peoria Station (Commuter rail platform) from 6:30 a.m. to 8:30 a.m.; and Denver Airport Station (Transit platform) from 5 a.m. to 7 a.m. All aboard!