The bus rapid transport system in Bogotá in Colombia is a very important case of how to move around safely and quickly in a non-polluting way in a city: very frequent buses, strongly protected routes, the same service, really, as an underground railway system, but much, much cheaper and can be done much more quickly, a brilliant idea in many more cities around the world that's developing.
哥伦比亚的波哥大市的快速公交系统是一个非常好的例子， 展现了公共交通如何在城市内实现安全、快捷、无污染： 高频次公交车、 全封闭专用道， 这真的跟地铁是一样的服务， 但便宜得多。 而且这项政策可在短时间内实现。 目前世界上很多城市都在仿效这个绝佳的主意。