It is increasingly being recognised that Bus Rapid Transit (BRT) Systems provide the most economical, easy-to-construct and efficient transport solutions for cities of the developing world.
Curitiba, a city in southern Brazil, pioneered BRT systems in the seventies. You can read about Curitiba's innovative use of dedicated metro-style Bus Lines, biarticulated buses and 'trunk & feeder' system in this link http://www.solutions-site.org/artman/publish/article_62.shtml.
Bogota, the capital city of Colombia, is another south american city whose BRT system has won international plaudits. See video here and FTA report here.
