Thank you for your answer. I have been changing the speeds in the car.lua profile and routing between different points with different distances. I have found that, for longer routes if I reduce all the speeds of the profile, there is a noticeable difference in the travel times, but it is not the same for shorter distances. From reading the code, I don't understand this behaviour, can someone point out possible causes?
Longer Route: http://localhost:5000/route/v1/driving/-2.130661,52.586363;-1.506500,52.408284?steps=true&alternatives=true&overview=full&geometries=geojson Medium Route: http://localhost:5000/route/v1/driving/-1.823924,52.560484;-1.897888,52.481578?steps=true&alternatives=true&overview=full&geometries=geojson Small Route: http://localhost:5000/route/v1/driving/-1.823924,52.560484;-1.897888,52.481578?steps=true&alternatives=true&overview=full&geometries=geojson *Longer Route * *distance (Km)* *time (min)* at original speed 59.6 60 at 2/3*speed 58.4-60.5 66-73.4 at 1/2*speed 58.4-60.7 71.4-78.8 at 1/3*speed 58.6-58.4 78-79 *Medium Route* *distance (Km)* *time (min)* at original speed 11.6-12.4 15.6 at 2/3*speed 11.6-12.4 16-19 at 1/2*speed 11.6-12.4 16.3-20 at 1/3*speed 11.6-12.4 17-20 *Small Route* *distance (Km)* *time (min)* at original speed 0.338-0.387 50.3-64.9 at 2/3*speed 0.338-0.387 50.3-64.9 at 1/2*speed 0.338-0.387 50.3-64.9 at 1/3*speed 0.338-0.387 50.3-64.9 Thank you. El vie., 23 ago. 2019 a las 1:32, Florian Lohoff (<[email protected]>) escribió: > On Fri, Aug 16, 2019 at 02:15:07PM +0200, Silvia Oviedo wrote: > > Hi everyone, > > > > I would like to have your input regarding this: > > > > In OSM there is tag: maxspeed. In my case, I find that the majority of > the > > primary roads have 30mph ~ 48 kph as a max speed. In the car.lua, I find > > that the highway speed that has been set primary is 65 kph. Is the speed > in > > the OSM tag taken into consideration? I understand that the speed table > is > > accessed by WayHandlers.speed() function but I am not sure what's the > > effect of WayHandlers.maxspeed(). > > Hi, > maxspeed, width, oneway, lanes and surface tags are used to determine the > weight/cost/estimated speed to travel segment - A lanes=1 without > any oneway will typically assume its typically speed is something like > halve of the maxspeed. But the whole issue is more complex as lanes > and maxspeed may carry :forward/:backward suffixes etc. > > So the car.lua with the help of lib/maxspeed.lua and others do that > estimation. If there is no maxspeed osrm has some assumptions for > road classes. > > Flo > -- > Florian Lohoff [email protected] > UTF-8 Test: The 🐈 ran after a 🐁, but the 🐁 ran away > _______________________________________________ > OSRM-talk mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/osrm-talk > -- Silvia Oviedo Castillo
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