MAX is a bus rapid transit network operated by Calgary Transit in Calgary, Alberta, Canada. MAX forms a part of Calgary Transit's rapid transit network, along with the CTrain light rail system. The MAX system opened in November 2018 with three routes: MAX Orange, MAX Teal, and MAX Purple. The MAX Yellow line opened in December 2019. MAX routes are distinguished from Calgary's existing express bus network, branded as "BRT", by the use of dedicated transitway on three lines, heated shelters, real-time information, and elevated sidewalks.