kentsmith9 wrote:I agree with qwaletee's overall proposal with one exception on mapping them or not. At some point in the past I was told that the snap to tracking is for visual reference, but the routing server is tracking the actual location of the vehicle relative to speed information. Therefore when a driver is in the HOT/HOV lane, even if Waze shows them in the std. freeway lane, the fast moving driver is not altering the freeway speed data. Have we confirmed or disproved that information?
That is correct. The merger process compares your GPS trace directly to the segments on the map, with no regard for the route Waze gave you or the segments Waze snapped you to.
GPS resolution is generally good enough to show roughly which lane you were in. Yes, there will be occasional GPS errors and drift, but in general (at least with my phone in my car) it's pretty precise.
Look at your drives in the Drives tab if you wanna check it out. Turn the roads layer off and follow the green line along the satellite imagery. It may look a little off or jagged around turns but that's only because Waze only takes note of your location once per second. Also – the trace turns red when merger was unable to find a road or possible connection for whatever it is you actually did.