Denver's official public transportation is operated by the Regional Transportation District (RTD), which provides comprehensive transit services throughout the metro area and surrounding regions. The system includes an extensive network of bus routes covering the city and suburbs, along with light rail lines (A, B, C, D, E, F, G, H, L, N, R, and W lines) that connect key areas including Denver International Airport, downtown, suburbs, and neighboring communities. The A Line provides direct rail service between Denver International Airport and Union Station in downtown Denver, making airport access convenient for event attendees. RTD also operates the Free MallRide shuttle along the 16th Street Mall in downtown Denver, which is particularly useful for navigating between hotels, convention centers, and downtown attractions. Additional services include regional bus routes, park-and-ride facilities, and the FlexRide service for areas with lower demand. The system accepts various payment methods including mobile tickets through the RTD Mobile Tickets app, MyRide smart cards, and traditional paper tickets, making it accessible and convenient for both residents and visitors attending business events in the Denver area.