It's all about the BASE! In construction it is extremely important to start with a strong base. RG System uses a concrete base that is independent from the post system. It is a 40lb precast concrete with three point anchoring system. Below are pics of the bases and RG Systems that were damaged due to a fallen tree and a truck losing control and run over. Each of the damaged mailbox customers were able to bend their posts enough so that they were able to continue receiving their mail service. Both damaged systems only required new straight post sections. Now think of the work required if those were standard wooden posts. You can't stop things from happening to your mailbox but RG can stop you from starting from scratch each time.
This picture demonstrates why the RG system is effective. This pic was taken during an installation and the ruralguard post is only temporarily assembled. The base of RG can be placed several feet further away from the road surface. This helps protect the system from a direct hit from vehicles leaving the road and reduces the direct hit from flying items such as ice or snow from a snow plows clearing the road. Then add the ability to sway away and you get the best system available!