Why Are School Buses Yellow, And Why Do They Lack Seatbelts?

There's no mistaking a school bus for any other kind of transportation—the iconic yellow color is actually officially named,"national school bus chrome yellow." The reason for the bright yellow color is simple: safety. People notice the bright shade sooner than they would any other color. But if safety is the first concern, why do so many buses lack seat belts? School buses that weigh less than 10,000 lbs are required to have seat belts, but all others aren't. This may seem strange when considering a fast-moving vehicle filled to the brim with young children, but there are logical reasons for this. An already-safe school bus doesn't increase in safety with the additional seat belts. Because of this, adding seat belts would be a huge waste of money. Also, seat belts may actually cause more harm than protection to a young child in some cases.

Why are School Buses Yellow?

Find out more about where the iconic color came from.

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Key Facts In This Video

  1. The first school buses were horse-drawn carriages known as school hacks. 00:30

  2. The color yellow was chosen for school buses because of its attention-grabbing qualities. 02:23

  3. School buses don't have seat belts mainly due to cost, but also because they do not necessarily increase safety for kids. 03:57

What's So Special About Number 2 Pencils?

And why are the necessary for all standardized testing?

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Key Facts In This Video

  1. In 1931, a high school physics teacher created the first machine to automatically detect test answers. 00:33

  2. Pencils are graded by the hardness of the graphite, which corresponds to the darkness of the shading. 01:34

  3. These days, most machines could detect pencil marks of any shade, regardless of the pencil grade. 01:57

5 Facts About School

School wasn't always out for summer.

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Key Facts In This Video

  1. The Flynn effect refers to the increase in IQ with each generation. 00:29

  2. Sir Isaac Pitman established the first distance learning course in the 1840s, when he sent shorthand assignment postcards to students and corrected the answers they mailed back. 01:38

  3. One kindergarten in Switzerland is set entirely outdoors, and covers wilderness survival techniques in addition to standard lessons. 02:09