sorry to hear your accident. but the only solution is:

来源: 于 2010-01-28 09:24:53 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

slow down! use your brake even before you get on downhill slope. your feet should not leave brake pedal.

4x4 will help, but slow down is the key.

I never use snow tire/chain.