Modern Marvels Episode 4, Traffic Episode 4, Traffic.

Streaming video - 2000

In less than a century, the world went from dirt tracks to highways, from propeller planes to space travel, from sailboats to supertankers. And in the process, we have created a glut of traffic on roadways, railways, airways, and seaways--traffic that must be controlled, managed, and regulated. We'll see how it's done.