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<p>I assume "transition" is meant, and not "transit".......</p>
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<p>On 2016-06-11 23:11, Tijmen Stam wrote:</p>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace"><span style="white-space: nowrap;">On 11-06-16 04:16, James Mast wrote:</span>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><span style="white-space: nowrap;">I've been using the "turn:lanes:*=none;slight_right" &</span><br /><span style="white-space: nowrap;">"slight_left;none" tags to indicate which side a new lane has been added</span><br /><span style="white-space: nowrap;">on a highway when going from 1 to 2 lanes (sometimes</span><br /><span style="white-space: nowrap;">"slight_left;slight_right" if the original lane is centered between the</span><br /><span style="white-space: nowrap;">two new lanes). How else are people to properly identify which side the</span><br /><span style="white-space: nowrap;">new lane is being added to?</span></blockquote>
<br /><span style="white-space: nowrap;">NOO!</span><br /><br /> That's what the transit:-tag is for: <<a href="https://wiki.openstreetmap.org/wiki/Proposed_features/transit">https://wiki.openstreetmap.org/wiki/Proposed_features/transit</a>><br /><br /> All lanes and road attributes that I know of are neatly summed up - not on the OSM wiki but the JOSM wiki: <<a href="https://josm.openstreetmap.de/wiki/Styles/Lane_and_Road_Attributes">https://josm.openstreetmap.de/wiki/Styles/Lane_and_Road_Attributes</a>>. From there links point to the OSM wiki.<br /><br /><span style="white-space: nowrap;">Take a look at this way (</span>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><span style="white-space: nowrap;"><a href="https://www.openstreetmap.org/way/419799887">https://www.openstreetmap.org/way/419799887</a> ) and take a look at the</span><br /><span style="white-space: nowrap;">Bing imagery and look at the 'turn:lanes:forward' tag, and you'll see</span><br /><span style="white-space: nowrap;">how this can, and would be valid.</span></blockquote>
<br /> The way I see it, the only "turn:lane" markers that signify a lane change is merge_with_left/merge_with_right. All the others signify that you can choose between different ways!<br /><br /><span style="white-space: nowrap;">The way I think this should be tagged is:</span><br /><span style="white-space: nowrap;">no turn:lanes</span><br /><span style="white-space: nowrap;">transit:lanes:forward=continue;new_on_left</span><br /><span style="white-space: nowrap;">(the continue is optional in this case).</span><br /><br /><span style="white-space: nowrap;">See for example Way 415775038</span><br /> Which has one lane, but the next segment has two lanes (one through lane and a right turn lane)<br /><span style="white-space: nowrap;">"transit:lanes"="continue;new_on_right"</span><br /> (Note that this is not a good example: the Bing image isn't current and the lane will be changed next monday, so I'll probably update it tuesday evening)<br /><br /><span style="white-space: nowrap;">It's allowing the router to know that</span>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><span style="white-space: nowrap;">a new lane is being added when combined with the next way (</span><br /><span style="white-space: nowrap;"><a href="https://www.openstreetmap.org/way/419799886">https://www.openstreetmap.org/way/419799886</a> ) which has the</span><br /><span style="white-space: nowrap;">"lanes:forward=2" tag. It also allows the routers to properly tell</span><br /><span style="white-space: nowrap;">people to get in the left lane if just ahead, there's a left turn they</span><br /><span style="white-space: nowrap;">need to make.</span></blockquote>
<br /> OSMand already does that with proper turn:lanes. It gives a preannouncement of which lanes you should go to:<br /><span style="white-space: nowrap;"><<a href="https://dl.dropboxusercontent.com/u/240848/OSM/Screenshot_2015-11-23-20-36-55.png">https://dl.dropboxusercontent.com/u/240848/OSM/Screenshot_2015-11-23-20-36-55.png</a>></span><br /> (The arrows are yellow before you are on the way, and green if you are on the way that has the turn:lanes)<br /><br /><span style="white-space: nowrap;">As far as I know, OSMand doesn't use transit:lanes.</span><br /> BTW, the "Lanes and road attribute" mappaint style doesn't use the transit:lanes for rendering, but it does a check on them, giving a warning if an incorrect transit:lanes is used.<br /><br /> Tijmen<br /><br /> _______________________________________________<br /><span style="white-space: nowrap;">Tagging mailing list</span><br /><span style="white-space: nowrap;"><a href="mailto:Tagging@openstreetmap.org">Tagging@openstreetmap.org</a></span><br /><span style="white-space: nowrap;"><a href="https://lists.openstreetmap.org/listinfo/tagging">https://lists.openstreetmap.org/listinfo/tagging</a></span></div>
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