Stop! Go! How Traffic Lights Work

From Jesse Mulligan, 1–4pm, 2:10 pm on 6 September 2016

There's probably not a driver in the world that hasn't cursed at some point, at the eternal frustration of a red light. And if you're an Aucklander, stuck in Auckland traffic, then the chances are much higher. We spend hours of our lives looking at them and (hopefully) obeying them.

But just how do they work? Matthew Hoyle is the joint technical services manager at the Auckland Transport Operations Centre.

Traffic Lights

Traffic Lights Photo: wikipedia