This is a basic driving law. Assuming you're from around here, you might consider picking up one of those nice little booklets from the license bureau and brush up!Another question. We can make right hand turns on red. Can you make a left hand turn from a one way street (say going West) on to another one way street (going south) on a red?
To the OP, the driver entering the road from the cross street has to yield to oncoming traffic. If the right lane is clear, he can enter the roadway, but if he's smart, he'll keep looking over his shoulder. I do this ever morning...
The driver approaching in the left lane is obliged to stay in the left lane once the other driver enters the road. If he changed lanes without seeing the other guy and rear ends him, I suspect that this would be case of shared liability, which is the case with almost all accidents. Rarely, is an accident 100% the fault of one driver... getting rear-ended sitting at a red light would be one of a few exceptions.