OsmSharp
Route.TotalTime very optimistic
Hello,
it seemed to me that Route.TotalTime was very optimistic. so i compared it to the results of a internet based routeplanner (http://www.falk.de/).
the middled factor was 1.4. Route.TotalTime * 1.4 led to a TotalTime close to that of falk,de.
one might assume that commercial route planners calculate extra time for stopping at traffic lights, accelerating / decelerating, going slower than permitted in narrow roads...
may i shyly suggest to use a static factor to get results of TotalTime less optimistic and more realistic?-)
asks shyly Lotto2
It is optimistic. We could change it but there is only so much information available in OSM at the moment. It's improving but that's the way it is. I used to have a metric of about 75% of max speed.
I'm also working on a way to handle historical traffic data in OsmSharp to get more realistic speeds but that's not for the next weeks more like months.
You can also try and use this:
https://github.com/OsmSharp/OsmSharp/blob/master/OsmSharp.Routing/Metrics/Time/TimeCalculator.cs
It tries to calculate times more realistically based on turns and so on...
