Tim, I agree with your assessment. Earlier, I didn't pay close enough attention to where the junctions were.
Andy, the instruction used to be called "continue" in the route list, and now appears to be called "none" and has always existed in the instructions passed. However, the app doesn't receive an instruction for this. Waze knows we want to be able to have this for specific situations, but in general, no instruction is needed to stay going straight through a 4-way intersection. You may also be interested to know that the UR routes used to show this continue instruction as well. Note the graphics and information on http://www.waze.com/wiki/index.php/Upda ... ted_Routes