What Is Bus Rapid Transit and Why Are Cities Adopting It?
Many cities need better public transport but cannot afford to dig a metro. Bus rapid transit, often shortened to BRT, offers a faster and more reliable alternative built around buses.
What makes BRT different from a normal bus line
A BRT line borrows ideas from metro systems. Common features include:
- Dedicated lanes: buses run in lanes separated from general traffic, so congestion does not slow them.
- Level boarding: passengers step on at platform height, which speeds up boarding and helps wheelchair users and parents with strollers.
- Prepaid fares: riders pay before boarding, so buses do not wait while tickets are sold.
- Signal priority: traffic lights are timed to favour buses.
- Frequent service: buses arrive often enough that people do not need a timetable.
Where it began
Curitiba in Brazil introduced an early form of the idea in the 1970s. Bogotá's TransMilenio, which opened in 2000, showed that BRT could carry very large numbers of passengers, and many other cities followed.
Why cities choose it
BRT can usually be built faster and for less money than rail, and routes can be extended or adjusted as a city grows. It can also use electric buses to cut local emissions. The trade-off is that its quality depends on protecting the dedicated lanes. When lanes are shared with cars or poorly enforced, the speed advantage disappears.
What makes it succeed
Successful systems pay attention to the whole journey: safe walking routes to stations, easy transfers to other services, clear information and reliable operations. Planners also need support from city leaders to give buses priority on busy streets.
The takeaway
Bus rapid transit is not a cheaper version of rail; it is a different tool. In the right corridor, with strong lane protection, it can deliver fast, frequent public transport that more cities can afford.
Sources and further reading
Questions or corrections? Contact the editorial team.