I was riding home the other day and a car with two teenage girls went past me and then immediately took a right turn in front of me. Fortunately she did signal and I didn’t crash but I had to jump on the brakes pretty hard to avoid their car. It was an OK road with a nice bike lane. I waved my arms at the driver in frustration but I’m wondering now if anyone knows the actual law (I’m in Oregon if the laws vary much).

It seems to me what she did was wrong but I assume there must be some grey area. If she was several hundred yards ahead and signaled a right then I assume it would be my responsibility to slow down and allow her to make her turn? Maybe not, in that case is the drive supposed to wait for the cyclist to pass on the right side before making their turn? Can anyone quote the law?

Thanks, Scott