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Navigation instruction missing, near Bracknell, UK #6336

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martenjj opened this issue Dec 4, 2018 · 1 comment
Open

Navigation instruction missing, near Bracknell, UK #6336

martenjj opened this issue Dec 4, 2018 · 1 comment
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Observed Needs more clarification, feedback, or research

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@martenjj
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martenjj commented Dec 4, 2018

The routing instructions for a route following the Nine Mile Ride across the California Crossroads (between the start and end points below) are missing a vital turn instruction.

Start point: B3430 Nine Mile Ride 51.37722,-0.85448
Destination: (unclassified) Nine Mile Ride 51.37700,-0.85680
Routing service: Internal
Routing profile: Car, fastest route, no avoids
Map: United Kingdom England 1 Oct 2018
App version: 3.2.7

The routing instructions say:

  1. Head B3430 Nine Mile Ride 97yd
  2. Turn left and go B3016 Finchampstead Road clockwise 91yd
  3. Arrive at destination

The "crossroads" is really a double mini roundabout. The "turn left" is correct for the first mini roundabout, to follow the east-to-west link road which is one way. However, at the second there is no further instruction and continuing to follow the quoted road direction and name/reference will go in the wrong direction, south west. There should be an instruction at the second mini roundabout to turn right (which is really to go straight) onto Nine Mile Ride again.

It's possible that this instruction is not given because the direction at the second mini roundabout is almost a straight line, so no turn directions are needed.

Suggestion to avoid situations such as this: if there is a straight line route, but where the road name or reference changes, then say something like "Continue on [road name or ref]" or "Keep straight on [name or ref]".

screenshot_20181204-120254_osmand

@osmandapp osmandapp deleted a comment from romusprime Dec 4, 2018
@vshcherb vshcherb added this to the 3.3 milestone Dec 4, 2018
@vshcherb vshcherb removed this from the 3.3 milestone Apr 5, 2019
@vshcherb vshcherb added the Observed Needs more clarification, feedback, or research label Apr 5, 2019
@martenjj
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Another example: Start 46.53172, 10.14358 Via del Foscagno, Teola, Italy
End 46.52537, 10.13328 Via Freita, Teola, Italy
No turn direction is given to leave the SS301 at the apex of the hairpin bend, the navigation just says
to go straight on and arrive.

Screenshot_20200212-202925_OsmAnd+

Again this would be solved by always giving turn directions where a road name, type or reference changes.

ORSM gives instructions at the turn:
https://www.openstreetmap.org/directions?engine=fossgis_osrm_car&route=46.5320%2C10.1444%3B46.5254%2C10.1333#map=15/46.5293/10.1474

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