Even he signals, he still should yield. Did police give accident report? Anyway, call your insurance company and they will handle. If police report says it is 50% your fault, if needed, you can go to the police station to ask why it is your fault. Sometimes, police is biased (discriminative).
Last time, my car parked and I was not in the car. A white woman backed out from her parking postion and hit my car. She tried to blame me for parking at the wrong place, which I did not. She called police. Police came and said we both have faults. However, the police did not give report as it is a private property. (I am 100% sure that he would not dare to write in a report that I am at fault too.) I planned to talk to his boss if there is trouble claiming insurance because what he said. Insurance company paid all my damage without any trouble.