So basically, the repairable ramps in the game are completely broken, you’ll get stuck on them when they’re stationary, and you’ll get stuck on them twice as bad when they’re on the move.
What I suggest, is making the ramps completely static at all times.
Create a new ramp model, and have it be in upwards position at all times, but have it be locked by a gate, which you can blow/blowtorch/hack (whatever) open, to gain access to the ramp, so the basic function of the ramp won’t change in any way.
The way I understood it, is that anything that moves in Dirty Bomb, is basically fucked, hence the problems with the EVs and the ramps.
This could be a workaround fix to the problem.