TechStuff is a show about technology. And it’s not just how technology works. Join host Jonathan Strickland as he explores the people behind the tech, the companies that market it and how technology affects our lives and culture.

How Traffic Lights Work

May 10, 201028 min
We often take traffic lights for granted, but regulating the flow of traffic takes a lot of planning and technology. Jonathan and Chris detail the technology behind traffic lights in this episode.Learn more about advertising on the HowStuffWorks podcasts at to learn about your ad choices when listening to podcasts, visit