[GraphHopper] Driving Time Graphhopper vs OSRM

[Guillaume PAILLET]

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> 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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