OpenGeofiction

Multi-lane motorways

Posted by Fleur on 19 July 2014 in English (English)

Is there any easier way of creating motorways that are made of two ways parallel to each other? Or will I just have to create the second way by hand?

Example of what I'm talking about: http://opengeofiction.net/#map=16/57.1453/40.5456

Comment from LeFaune on 19 July 2014 at 13:09

Shift+P in jOSM : create parallel way.

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Comment from Fleur on 19 July 2014 at 13:15

Thank you! :)

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Comment from Sarepava on 19 July 2014 at 16:37

You can do the same in Potlach. The hard part is working out how far apart the carriageways should be, because the width is shown the same no matter how many lanes the road has.

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Comment from histor on 20 July 2014 at 17:46

In Podlatch2 you can set difference width of the parallel lanes. So I draw the general outline in zoom 14 or 13 (500m / 1 km) and set the parallel lanes in zoom 17 or 18 (100 or 50 m). So you get a good feeling for the real space for the motorway.

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Comment from Oxalia on 21 July 2014 at 19:52

Often the two carriageways are drawn in very large distance. (>50m)

In the real Germany there are distances of 10-20m.

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Comment from indyroads on 26 July 2014 at 17:55

A good rule of thumb for motorways is 85-100 ft (25-30m) between ways should account for any median space and lane widths measured centerline to centerline. More space could be sued in situations were there is more than 6 lanes. for creating the dual carriageways I typically use the parallel way tools to copy a parallel way then reverse the direction for the opposing way. This is easiest to do in the JOSM editor. It is recommended that you install and learn how to use this editor because it makes it easier to more quickly create contect for the map as well as measurement functions.

City streets with dual carriage ways (streets with medians) are going to be narrower. typically the medians are only a few feet across. I typically only use 35ft (10-11m) between ways on most of those.

Railways (double and/or triple track, rail switch yards, etc. I usually leave about 12-14 ft (~4m) between tracks (unless more space is needed for roads and railroad support, platforms, etc)

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