I train SAS systems operation and repair. The system is designed to fail in the safest condition and that would be a trapiziod. There is no way any one can state or would state that this system is operator proof, but is is the safest truck on the market when it comes to tip over. The SAS system is really 2 systems in one ,SAS and AMC. System of active stability and Actice Mast controls. This are computor monitored and controled systems. UnLike a lot of other systems that are just passive rubber systems. They are all better than we had 20 years ago but you get what you pay for.