Brio is a bus rapid transit system in El Paso, Texas, United States. It is operated by Sun Metro. The first line, the Mesa Corridor, began operating in the fall of 2014. This line is 8.6 miles (13.8 km) long and uses 22 purpose-built curbside stations with shelters, ticket vending machines for pre-boarding payment, and real-time arrival information. Two more corridors, Dyer (Northeast) and Alameda (Mission Valley) Corridors became operational in October 2018. The Montana Corridor which will serve the Eastside will be the fourth expansion of the Brio service and is expected to become operational in early 2022. When the Montana Corridor is completed the entire system will be 51.3 miles (82.6 km) in length with 98 stations.