The 99 B-Line is an express bus line with bus rapid transit elements in Metro Vancouver, British Columbia, Canada. It travels along Broadway, a major east–west thoroughfare, and connects the University of British Columbia (UBC) to Commercial–Broadway station on the SkyTrain system. It is operated by Coast Mountain Bus Company and funded by TransLink. The 99 B-Line is the busiest bus route in Canada and the United States, with a 2018 average weekday ridership of 55,900 passengers. This number is up from approximately 45,000 passengers per day in 2007.