Anyone had to use a runaway truck ramp?

I have see a ramp in Alabama iirc up in the sand mountain area that just ran you off a mountain , I don't even recall it having any gravel, but I promise you it was not built to save the driver. Granted it was probably built years ago, but still there 15 or maybe 29 years ago. I have only watched one truck hit a ramp, it was more or less a modern one on 17 south of flag, I would imagine it had over a foot of pea gravel to stop the truck. That gravel looked more or less like he hit water or a large snow drift, as a wall of it hit his windshield.
I know of at least one driver of a crane truck that did get killed in Idaho a few years ago when he took one, I also knew the guy that bought it for salvage, I do not know how, but there was even gravel inside the rear ends.
You want to keep your rig under control, a ramp is built to save the public, not the out of control driver.
I

 

The ramp is just the first part of a 2 part process. The 2nd part is the trip to Walmart to buy a new pair of underwear!

 

Ok... I have read some points in this thread and I want to learn.
What are these hills/mountains looking like that are causing brakes to fade... and once you are in the proper gear what do you do to control it?

 

I’m a new driver I but I’ve been down most of the mountains. Some are like a 7-9% grade with bad curves. I have an auto I just put it in manual use a gear low enough to hold it with the jake on stage 2 or 3
If I need to I’ll use the service brake in short bursts like I was taught. I probably go down the mountain “too slow” but atleast I make it down in one piece

 

Search for Threads under my username I have one called a downhill example that's got a bunch of useful information in it

 

There are no 9% grades on any interstate, I'm not sure there are any 8% ones, most interstate grades are 6% or less,,now some of the back roads have them and more.

 

Never used the runaway ramp.
But I've used plenty of toilet paper
Once I made it to the bottom.

 

9% was on a side highway up in the NE West Virginia I believe. It was more of a hill than a mountain but when I was heavy I was glad it had a speed warning lol.
Cabbage patch, sandston, deadman’s pass are 6 or 7 there’s an 8% in Colorado but I don’t know where.

 

Vail pass in CO has a few 7% spots

 

I think the first mile WB from Ike is 7%, too.