Originally Posted by East Hill
I studiously keep my eyes on the opposite direction of traffic until they give up. I've never had drivers try to wave me through at a four-way or a traffic light. There are very few roundabouts here, and I've never had problems with drivers the few times I've gone through them.
East Hill
I've taken to just turning my head (and my front wheel) completely away from 'courteous' motorists. If they know you can't see them, they tend to give up pretty soon.