Maybe... I shouldn't post in this topic, but oh well...
What you need to realize when talking about this issue is that it's a general issue well known in LFS. The problem is not the barrier themselves, as the problem of the damage system is not the cars, but the way they interract between each other. It's the same thing with anything that has to do with collision in LFS.
The obvious thing that doesn't work at the moment is that you can actually get into those barriers, which is, well... quite impossible. However, you can't actually fix the barrier problem without fixing the collision system, they come together. Imagine what would happen if you wouldn't enter in the barriers and bounce back like it is at the moment: the true thing would be that your car would pretty much disintegrate (considering it's a high speed crash), but that cannot be unless you've got a respectable collision system/damage system.
It should come eventually
edit: And by the way, I believe that the less you post over a long ammount of time, the best the posts are