How to derive travel time given list of OSM nodes?

[zyrgit]

I have a question about deriving travel time given a list of OSM nodes like [5371582342, 2458643672, 2458643670, 5377378282]. Note that this sequence of nodes is not necessarily a routing results of OSRM, otherwise the duration could be obtained from the json result. Do I need to query duration of every pair of nodes and sum the duration up? Thanks for the answer.

[danpat]

@zyrgit OSRM has no index from OSM node to coordinate, so you can't pass the OSM node IDs in as input. Your best option would be to get the coordinates of those nodes, then do a /route query, using the coordinates as waypoints.

[zyrgit]

Thank you for the reply. I can easily get the Lat Lng of the OSM nodes, but when doing route query with waypoints, like "/route/v1/driving/-88.22219,40.114936;-88.2193765,40.1164187;-88.2527876,40.1347753;-88.2579482,40.1446107" if the coordinates are exactly at the intersections, it will give detour routes, I think OSRM didn't get the correct edges the coordinates are on. Even if I specify radius to "blur" waypoints, like pending "?radiuses=20;20;20;20" to the query, it still gives not the fastest route. Do you know how to solve this? Thank you.

[danpat]

Right - that problem is described over in #4465

Try using /match instead

[zyrgit]

Got it, thank you!