Techrat's location states he is in Illinois. When I was stationed at Scott AFB in Illinois during the 80s, Illinois was an at fault state-meaning the responding police office makes the call who is at fault and tickets accordingly or places in the record who the police officer believes was at fault. Don't know if that is still the case or not.
Remember guys, your turn signals does NOT give you the right of way-period. They are only legally required to use communication devices. When changing lanes, the vehicle occupying their lane does NOT have to give up their right a way. Only one state in the country allows lane splitting or lane sharing between car and a bike (California); all other states, the vehicle operating in the lane has a right of way-different states determine this differently.