I need help changing the density of vehicles on my server, any suggestions?

Hello, I’m looking for a script that works off of Ace perms where I can turn AI off and change the densities of cars. Also, I’m having a prob with the 18-wheelers. The trailer is connected, then hops up and down, and after they jump up and down enough, they disconnect and explode. If anyone knows of a script, please Let me know!!!

I have not personally tested this, but this is an update to Calm AI which has density control features.