[GraphHopper] Driving Time Graphhopper vs OSRM

[Peter K]

oh, when reading my mail it looks like we shouldn't route over this
"road" at all ;)
how can that be ... I'll look into it ...

> Hi Laura,
>
> indeed, my integration tests failed too (but the reporting was
> improperly scripted ;))
>
> The real problem was that there are indeed very unrealistic maxspeed
> values or some German Spaßvögel :)
> http://www.openstreetmap.org/browse/way/204067725
>
>   * /maxspeed
>     <http://wiki.openstreetmap.org/wiki/DE:Key:maxspeed?uselang=de>//=
>     300/
>
> Fixed now.
>
> Regards,
> Peter.
>
>> HI Laura,
>>
>> thanks! I'll investigate. Try 'git checkout <somewhereBefore>' for now ;)
>>
>> Regards,
>> Peter.
>>
>>> Hi,
>>>
>>> when I try to import the latest germany file, I now get the
>>> following error:
>>>
>>> 2013-07-04 15:05:44,267 [main] INFO  graphhopper.reader.OSMReader - 138?326?809, now parsing ways
>>> 04.07.2013 15:05:46 com.google.inject.internal.MessageProcessor visit
>>> INFO: An exception was caught and reported. Message: java.lang.IllegalArgumentException: Speed value too large for encoding: 1890
>>> java.lang.IllegalStateException: Couldn't load graph
>>> 	at com.graphhopper.http.DefaultModule.configure(DefaultModule.java:62)
>>> 	at com.google.inject.AbstractModule.configure(AbstractModule.java:59)
>>> 	at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
>>> 	at com.google.inject.spi.Elements.getElements(Elements.java:101)
>>> 	at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:133)
>>>
>>> Might this relate to the speed limit change performed yesterday?
>>>
>>>
>>> Thanks, Laura
>>>
>>>
>>> 2013/7/3 Peter K <peathal at yahoo.de <mailto:peathal at yahoo.de>>
>>>
>>>     Hi Guillaume,
>>>
>>>     did you pull, recreate graphhopper and import the graph again?
>>>     For the example graphhopper now returns 1h 6min
>>>
>>>     Regards,
>>>     Peter.
>>>
>>>>     Hi Peter,
>>>>
>>>>     Thanks a lot for your assistance. Unfortunately, it does not
>>>>     change the driving duration ...
>>>>
>>>>     BR
>>>>
>>>>     Guillaume
>>>>
>>>>     Le 3 juil. 2013 à 16:34, Peter K <peathal at yahoo.de
>>>>     <mailto:peathal at yahoo.de>> a écrit :
>>>>
>>>>>     fixed a bug where speed limits can now be bigger than the
>>>>>     speed estimated by the highway tag.
>>>>>     Please report if this fixes your problems!
>>>>>
>>>>>     Regards,
>>>>>     Peter.
>>>>>
>>>>>>     Hi Peter,
>>>>>>
>>>>>>     Here is an example where time difference is around +40% . The
>>>>>>     good duration is 1h05 min
>>>>>>
>>>>>>     http://graphhopper.com/maps/?point=47.87502,-3.92245&point=48.44791,-4.41854&vehicle=car
>>>>>>
>>>>>>     Graphhopper : 1h23 min
>>>>>>
>>>>>>
>>>>>>     http://map.project-osrm.org/?hl=fr&loc=47.87502,-3.92245&loc=48.44791,-4.41854
>>>>>>     OSRM : 01h04 min
>>>>>>
>>>>>>
>>>>>>     Thanks for your help 
>>>>>>
>>>>>>     Guillaume
>>>>>>
>>>>>>
>>>>>>
>>>>>>     Le 2 juil. 2013 à 14:37, Peter K <peathal at yahoo.de
>>>>>>     <mailto:peathal at yahoo.de>> a écrit :
>>>>>>
>>>>>>>     Hi Guillaume,
>>>>>>>
>>>>>>>     I do not know internals from OSRM but GraphHopper could
>>>>>>>     probably need
>>>>>>>     some tuning there (e.g. less speed in cities, less speed for
>>>>>>>     turns, ...).
>>>>>>>
>>>>>>>     Do you have some example links for OSRM where you encounter
>>>>>>>     big differences?
>>>>>>>
>>>>>>>     Regards,
>>>>>>>     Peter.
>>>>>>>
>>>>>>>>     Hello,
>>>>>>>>
>>>>>>>>     We are testing Graphhopper and OSRM and we have found some
>>>>>>>>     differences in routing times :
>>>>>>>>
>>>>>>>>     - Graphhopper returns longer driving time as OSRM does
>>>>>>>>     (except for very short distance between 2 cities). It
>>>>>>>>     appears that OSRM driving durations are closer to the real
>>>>>>>>     durations compare to Graphhopper.
>>>>>>>>     - We have set  same speed parameters (when there is no max
>>>>>>>>     speed) on Graphhopper (carflagencoder.java) and OSRM (car
>>>>>>>>     profile).
>>>>>>>>
>>>>>>>>     Both Graphhopper and OSRM seems to be using CH.
>>>>>>>>
>>>>>>>>     How to explain these difference in driving time ? Is there
>>>>>>>>     a way to modify parameters on Graphhopper to get driving
>>>>>>>>     durations closer to the real ones ?
>>>>>>>>
>>>>>>>>     Thank you
>>>>>>>>
>>>>>>>>     Guillaume
>>>
>>
>
>
>
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