Timbones wrote:Thing is, do levels actually have any purpose?
I believe they DO have a purpose, at least for the program that WAZE uses to generate 'Problem Reports'.
If two segments, on the same level, overlap or cross, WAZE seems to puts a 'Problem Report BALLOON' on the spot that shows up in WME to indicate a missing intersection, or roads close but not touching.
I find multiple-levels quite useful in complicated intersections, to allow proper depictions of the 'only' lanes without having them connecting to other, crossing lanes, to which the traffic in that lane can never route.
Of course, unnecessary levels can be frustrating when trying to connect two segment. If they won't connect, make sure that they are on the same level!
They might be used for rendering overlapping roads in the client, but they don't influence routing. When there's a fat purple line on top of the map, the levels aren't visible anyway.
No purpose to the routing engine or the client software, but I think important to those of us editing the maps.