The traffic light may be a device that you have never even thought about - but have you ever tried to drive without them?! They are a crucial element of our automobile centered society and provide automated traffic coordination on the millions of congested American roads. Seeing Green is a vintage educational film from 1937 about some of the earliest models of traffic lights and how they were developed. Table Of Contents: (1) Seeing Green (1937) - Take a look at the science behind traffic lights in the 1930s with this classic Jam Handy video. It shows how the control system of a traffic light functions to control the growing number of vehicles being produced in this era - 9 MinutesPrice: $14.99
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