I also experience this!!! I think behaviorally, the punishment of the first time we hit our heads, (ending up with PCS) is something so aversive that we will do anything to avoid the risk again. Mine is a result of a car accident, and even though I can only tolerate short rides, I freak out when my boyfriend is too close to other cars because I'm afraid they are going to stop suddenly.

So yes, I totally understand!