Comment by mrexroad
2 hours ago
That’s pretty cool. I’d assumed there would be something similar to the run-away truck ramps you see on steep grades — basically a deep gravel pit. However, actually thinking about it, something along the lines of a gravel pit would likely cause significant damage to engines (not to mention risks created by engine damage) but also seriously impede emergency services.
Gravel flies. You can't have it anywhere near an airport runway.
(Some planes have no problem with it, though. You can make even the entire runway of gravel if you only fly those.)