[GraphHopper] Driving Time Graphhopper vs OSRM

[Peter K]

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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>>>>>
>>>>
>>>>
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