Having the right of way is something someone can give up voluntarily. If you have a 4 way stop, depending on the state you are in, and two people arrive at the same time, the person to the right has the right of way.
Now, remember, this is two people who arrive at the stop. Not two people who arrive at the intersection to wait in line.
So, you pull up behind a line of 3 cars at an intersection. The two cars in front of you go, and you pull up to the stop line. This is when you are considered at the intersection. Thus, you get to the stop line at the same time a guy who pulls up that had no one in front of them, even though you have been waiting, he may have the right of way if he is on the right.
So, you pull up, and the guy to your right waves you on. Even though he has the right of way, he has the right to waive that right and pass it off to you, either as a courtesy, or other. If he does, and you go, and then he does, you will have the burden of proving your case if there is a collision, but that isn't difficult if there were other people there too.
Does that make sense, or was I just rambling??
Last summer I watched the little old lady in front of me wave someone across the two-lane traffic and turn left in front of her. She waved them right in front of an oncoming car and *BAM* it was ugly. The person was broadsided on the drivers side, and the teenagers that hit her weren't doing so hot either.
I stayed to help until the cops came. The lady (who waved them on was visibly shaken), however, the cop told her that it was still the drivers responsibility to look before entering traffic (she didn't wave them around a blind spot or anything), it was more of a friendly "No, you go first kind of thing" Turning left there can be a bitch.
That's a different story. Waving someone out to grant them right of way when you don't have the right of way to give can get really messy. As you described, it typically happens when a person wants to pull out of a parking lot and turn left across a two lane road. The car in the outside lane waves the car in the parking lot out. But that car only has the right to grant access to their lane. When the car in the parking lot pulls out, they for some reason think they have the right to cross all lanes of traffic, then whammo, they get plowed into by the person in the inside lane.
The person who waved them through can have some liability, but that would be mitigated to nothing if it was articulated that the person was only granting them the right of way to their own lane, not all lanes.
I think I'm rambling again..... :huh: