How many birds to the box?
The dimensions I'm used to locally are 23" wide, 18" deep and 11" tall. The posts are 10" tall. These crates will hold at least five adult chickens or for transporting 3-4 week old chicks to pasture. They're sized for moving in a pickup, not of a flatbed.
The best part of that video is lookin at all the tire marks where the trucker decides WHOA, slow down big girl. Thats a long drop off the sides there.
There are a couple of them like that in Arizona that had me hugging the uphill side, and one or two in Colorado, though I'm sure there are dozens, hundreds of others. But I never worked the Interstates much, and I don't plan to again.
In Wyoming, we got what we call *two tracks* country roads with weeds growing up between the ruts. And snow for 6, 8 sometimes ten months a year....