(I'm getting pretty of-topic here...)
foxitrot wrote:... on some roads I'm occasionally driving much slower than their average speed. In such cases the ETA is totally unusable and I'd appreciate an option in the client for specifying my personal preferred max speed.
If you're driving slower than prevailing traffic for some other reason, I don't see how any other nav is going to give you a better estimate.
While using many "offline" navis (and route planners) I was often able to define my driving speed profile (city, outside, freeway). I'm aware it is less important with Waze's historical data, but was pretty good customizable on roads where the road profile was not the speed limiting factor.
bgodette wrote:I may be misunderstanding foxitrot's suggestion, but what I gather is he'd like to be able to set a Max Speed and have ETA take that into account if the route uses segments where the current/historical average is higher than that.
harling wrote:Waze's speed data is correlated to time of day * * I'm not sure if it also takes into account weekday vs. weekend, season, holidays etc.
It seems to take all single week(end)-days into account and distinguish between them. (I'm not sure whether the discovered shifts by 8 hours and later 24 hours were already fixed.)
Upon Waze's advertisement (Outsmart The Memorial Day Traffic with Waze
) it is apparent, that Waze aims and tries to take also seasons into account... and must have prepared (or selected) data for this particular day (at least 1 year) in advance. But the seasons off course do differ between countries. Thus I've contacted them a few days later with a question, whether they would be interested in gathering specific dates for particular countries. They replied with their well-known silence
It also does not take long-term holidays into account, probably for the same reason. Which causes huge data pollution, with rather long catch-up phase during+after summer holidays.