Actually they're doing just that. In essence using high capacity buses on designated tracks, which are physically separated from the road. As a user it feels li

Actually they're doing just that. In essence using high capacity buses on designated tracks, which are physically separated from the road. As a user it feels like a mixture between metro and bus, while being much, much cheaper to implement than a designated metro, or light rail system. I used it in Lima and was pretty impressed about its efficiency. More here: http://en.wikipedia.org/wiki/El_Metropolitano http://en.wikipedia.org/wiki/El_Metropolitano