The stories I have heard from close calls, crashes and you tube videos have probably saved my life more times than I can count. I know I'm not the only one who has learned from others. Here is a thread to share it. I'll go first.
When merging onto the freeway it is a good idea to check the lane you are merging into no matter how fast you are going.
When merging onto the freeway it is a good idea to check the lane you are merging into no matter how fast you are going.