Who'd have thought that if you want a stable job in NYC, you should learn to make Stop signs? The red octagons are "our bestseller," John Jurgeleit, Executive Director of Operations for the Department of Transportation's in-house sign shop in Queens, told Insider. The Stop sign is the most frequently crashed-into, vandalized or stolen, and the shop has constant orders to produce replacements.

The D.O.T. actually runs five sign-making shops (one in each borough), Insider visited the Queens branch to witness their operation, where orders come in on pieces of paper and signs are largely handmade.

In this peek inside the shop, they also reveal an interesting tidbit about the history of the Stop sign, and why it used to be yellow:

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