Bus rapid transit (BRT) systems have been touted as a great transport solution for cities all over the world. They have many advantages of underground and rail systems, but are cheaper, faster and easier to build, and more flexible. The cost of a BRT system can be as high as 25 million dollars per mile, but rail systems can go anywhere from 70 to 200 million per mile. There’s no need for excavations like with underground systems, and designating lanes is much easier than setting tracks for rail. Also, buses can go where other systems cannot.
BRT design is simple: buses running in designated lanes with designated stops. It sounds quite easy, but it can be a challenge especially for cities in the developing world that struggle with informal transport.