<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Hi Dion,</p>
<p>I'd say a bit of both.</p>
<p>The junction is topologically correct but looking at the aerial
imagery and the node that you circled,
<a class="moz-txt-link-freetext" href="https://www.openstreetmap.org/node/1691043684">https://www.openstreetmap.org/node/1691043684</a> , then it could be
moved very slightly north and a bit more aggressively west to
lessen the change of direction and better fit the actual physical
situation. You could also map in the pedestrian crossing and close
the gap further.<br>
</p>
<p>OSMAnd may also need some tweaking. I helped test a commercial
routing product and know that these situations are difficult to
get right. At the most simple, OSMAnd should measure the deviation
from directly straight on (0 degrees) and assign anything up to,
say 8 as "straight on", to around 45 degrees as "bear left" and
anything more as "turn left". The may still not get it right.
There are a couple more sophisticated things it could do: 1) Note
that you are going from/to the same road name/classification and
dynamically broaden the "straight on" angle test or even drop the
navigation instruction entirely; 2) look ahead to the next node or
two and create some kind of smoothed average angle, which will
again help push the instruction to "straight on".<br>
</p>
<p>Mike<br>
</p>
<div class="moz-cite-prefix">On 2019-01-31 09:54, Dion Moult wrote:<br>
</div>
<blockquote type="cite"
cite="mid:B2N7Y3VJT1zA4l93LSxty48Rc3f8s8DNqx_z3LCzMmQJkplErPm6NNv-2JY5VZ5z68jHNJO6P_q5F5gLjLctBCBWGH7dVYjr09x0NyO_f9A=@thinkmoult.com">
<pre class="moz-quote-pre" wrap="">G'day all!
In the intersection of Liverpool road and Burwood road in Burwood, Sydney (see attached), if I am travelling in the direction shown by the red arrow, then my GPS device should tell me to continue and drive straight at the intersection. However, because at that junction, the map splits up Liverpool Road into two roads, OSMAnd tells me to turn left there, which is quite confusing.
What is the appropriate way to fix this mapping? Or is it a problem with OSMAnd?
Dion Moult
</pre>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
Talk-au mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Talk-au@openstreetmap.org">Talk-au@openstreetmap.org</a>
<a class="moz-txt-link-freetext" href="https://lists.openstreetmap.org/listinfo/talk-au">https://lists.openstreetmap.org/listinfo/talk-au</a>
</pre>
</blockquote>
</body>
</html>