Okay, this is my last video post of the night. Sorry!

I couldn't find any detailed links about these, but they seem a bit dangerous. But then again, I'm sure there are giant warning signs and such saying to stay away unless you have the proper dood-dad to lower them.

Reminds me of the hundreds of tiny toll-road pop-up things here in the US, to block off toll roads when they aren't in use. But they are flexible...