I found it hard to believe someone would report an accident they cannot see strange as well. Since not only does WAZE want to know of the accident, but far more importantly, its precise location.
I would think everyone WAZER would know that when they report something, it is also getting placed on the map in the place where they pressed the first button in the reporting process.
The true cause of mystery slowdowns on the interstate is because people follow each other too closely. I doubt you actually have anyone driving less than the speed limit on the interstate let alone driving 40. Driving over the speed limit is not permitted in any lane.
I don't care if you "camp out" in the left lane IF their is no one behind you. If there is someone behind you, no matter how fast you are going, no matter if you think you are not finished with the left lane, YOU need to move over.
Especially on 3 or more lanes, the left lane should be mostly clear. If only two lanes I can more let it go. But you know good and well, if the road was 15 lanes wide, some drivers are still going far left. Because that's what they do.
Another big cause of congestion on freeways is folks that have driven the left lane to within a quarter mile of their exit, and are now trying to move right. That and following too close.