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web:faq:incorrect_routes [2018/03/31 01:28] – [Roundabouts] adminweb:faq:incorrect_routes [2018/06/28 11:51] – admin
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 Fords are tricky, as they are often seasonal or more challenging after rain. Kurviger will route through fords, but if they are marked as impassable or deep, we will not allow routing over them. If you are routed through a deep ford, consider updating the OSM data or let us know. Fords are tricky, as they are often seasonal or more challenging after rain. Kurviger will route through fords, but if they are marked as impassable or deep, we will not allow routing over them. If you are routed through a deep ford, consider updating the OSM data or let us know.
 +
 +==== Turn Restrictions ====
 +
 +Sometimes it can happen that turn restrictions are entered incorrectly. Kurviger supports basic turn restrictions without via nodes (see [[https://wiki.openstreetmap.org/wiki/Relation:restriction|the OSM wiki]] for more information). It is hard to spot these issues on OpenStreetMap, therefore we recommend to use [[https://ahorn.lima-city.de/tr/|this website]] that makes it easy to find turn restrictions and automatically marks them as potentially erroneous if something seems wrong. 
  
 ===== The Estimated Duration (ETA) seems not correct ===== ===== The Estimated Duration (ETA) seems not correct =====
  
 We try to calculate a realistic ETA based on the available road data. In general our ETAs good enough for a rough orientation. We have seen issues with the ETA if the road data is insufficient. We rely on [[https://wiki.openstreetmap.org/wiki/Key:maxspeed|max speed tags]] and other road information being present to estimate a realistic ETA. If there is not enough data, we try to estimate a realistic ETA, which might not always be possible. If you have seen cases where the ETAs are completely off, please feel free to contact us or to improve the OSM data. Please also be aware that travel times depend on the weather. A wet and muddy dirt road might slow you down considerably. We try to calculate a realistic ETA based on the available road data. In general our ETAs good enough for a rough orientation. We have seen issues with the ETA if the road data is insufficient. We rely on [[https://wiki.openstreetmap.org/wiki/Key:maxspeed|max speed tags]] and other road information being present to estimate a realistic ETA. If there is not enough data, we try to estimate a realistic ETA, which might not always be possible. If you have seen cases where the ETAs are completely off, please feel free to contact us or to improve the OSM data. Please also be aware that travel times depend on the weather. A wet and muddy dirt road might slow you down considerably.
 +
 +===== I avoided X but Kurviger still uses a road that is X =====
 +
 +==== Unpaved ====
 +
 +We read surface information from OSM, with some exceptions, we assume that roads are paved, unless otherwise marked. This means, if you avoided unpaved roads, but yet have been routed over an unpaved road, this road is probably not marked as unpaved.
 +
 +This could be fixed by adding the surface attribute to the road. Often you would set ''surface=unpaved'' or ''surface=gravel''. For a detailed list of surface values, have a look at the [[https://wiki.openstreetmap.org/wiki/Key:surface|OSM Wiki]].
 +
 +==== Narrow ====
 +
 +Finding if a road is narrow or not is very difficult and mostly based on guessing. We try to guess if a road s narrow or not by using different sets of attributes, however it is difficult to exactly determine if a road is narrow or not. 
  
 ===== Issue with Turn Instructions ===== ===== Issue with Turn Instructions =====
  • web/faq/incorrect_routes.txt
  • Last modified: 2022/10/18 16:02
  • by admin