I don't think threat assessment is driving people's driving habits. More likely, they didn't actually see you, or if they did, they made an assumption that you

I don't think threat assessment is driving people's driving habits. More likely, they didn't actually see you, or if they did, they made an assumption that you were going to wait for them or otherwise not be in their path. That could be because they don't know the laws concerning cycling, or maybe being tired/distracted/inebriated.