Cutting Open A Stoplight To See What's Inside - Popular Mechanics

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Yellow, signaling device, Amber, Traffic light, Gas, Pocket, Belt,

What's Inside//YouTube

Ever wonder what's on the inside of a stoplight? If so, the YouTube channel What's Inside? has the perfect video for you. Dan and his son Lincoln recently received the key to the city of Kaysville City, Utah, as thanks for their informative video series, and they called on the mayor of Kaysville to help provide some answers about these common traffic lights, and what's inside them.

[youtube ]https://www.youtube.com/watch?v=47b1t4mLBB4&t=238s[/youtube]

The first thing that strikes you is how big these traffic lights really are, which stretch over 4 feet tall. Mounted about 18 feet above the streets, the stoplights seem much smaller than they do on the ground, but a person can easily fit their head inside one of the cowls surrounding the lights.

The light bulbs on the inside of a stoplight aren't much different from what you have in your home, but they are mounted inside a reflective casing that shines much brighter than the light alone. The light then passes through different colored glass to give drivers the red, yellow, and green signals.

But how strong is that glass? Would it stand up to a shot from a BB gun? You'll just have to watch the video above to find out.

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