TransJakarta in Jakarta, Indonesia. With a length of 251.2 km (2019), it is the longest BRT system in the world.[1]
30 meter long Transmetro in Guatemala City

Bus rapid transit (BRT), also called a busway or transitway, is a bus-based public transport system designed to improve capacity and reliability relative to a conventional bus system.[2] Typically, a BRT system includes roadways that are dedicated to buses, and gives priority to buses at intersections where buses may interact with other traffic; alongside design features to reduce delays caused by passengers boarding or leaving buses, or purchasing fares. BRT aims to combine the capacity and speed of a metro with the flexibility, lower cost and simplicity of a bus system.

The first comprehensive BRT system in the world was the Busway in Runcorn New Town, England which entered service in 1971.[3][4] As of March 2018, a total of 166 cities in six continents have implemented BRT systems, accounting for 4,906 km (3,048 mi) of BRT lanes[5] and about 32.2 million passengers every day, of which about 19.6 million passengers ride daily in Latin America, which has the most cities with BRT systems, with 54, led by Brazil with 21 cities.[5] The Latin American countries with the most daily ridership are Brazil (10.7M), Colombia (3.06M), and Mexico (2.5M). In the other regions, China (4.3M) and Iran (2.1M) also stand out.[5] Currently, TransJakarta is considered as the largest BRT network in the world with approximately 251.2 kilometres (156.1 mi) of corridors connecting the Indonesian capital city.[1]