2005 Toyota Prius wipers, windshield & visibility problems

Accident in raleigh n.c. On us-1. Heading north on us-1 and making left across 3-lanes of south bound traffic broadsided another vehicle , causing it to turn over. I was driving a 2005 prius. After much intense thought as to why I did not see the other vehicle after I observed all lanes to be clear I realized that the vehicle that was traveling in the 3rd lane further set from me must have been hidden behind the rear view mirror of the prius.

The automatic dimming rear-view mirror in my 2005 toyota prius dims randomly. It has supposedly been replaced by the dealer with no noticeable improvement. It responds to blue-tinted (whiter) headlights, but does not dim when a standard yellowish headlight is shining into the mirror. This is extremely dangerous and distracting.