Pylons, otherwise known as "traffic cones," are often used to warn you of things, or in the case of the film business, to direct you to where you are supposed to go. You can tell they are film pylons because of the unique symbols they are marked with.
They tell you things you really need to know, and draw your attention to other signs you may be interested in reading...
They also glow when you shine light on them, and they are easy to run over in your car!
Thank you pylons, for making my days on set so much easier to find...
Word to the wise though, don't go to any set that doesn't have this sign as well:
Lunch rules.
