[Threshold]

It really depends on what you mean by 'crashing the server'. I don't think this would be an Anti-DDoS, because that's just... not very good. Invalid vehicle mods do have the potential to, maybe not crash the server, but crash all the clients that come close to the 'invalid' vehicle. If you have multiple invalid vehicles, you have multiple crash sites where clients will disconnect. If you don't already have it, use the anti-invalid vehicle mod by JernejL. If you can think of anything else that might crash the server, add it to the list.