[OSM-dev] Directionality of lanes

Jochen Topf jochen at remote.org
Tue Mar 27 10:19:15 BST 2012


a) please do not use HTML mail on the list
b) there are no official tags in OSM
c) do not tag directionality of highways. it would add millions of tags to OSM
   with no use because it is obvious what the right value is for each country

You can see here http://taginfo.openstreetmap.org/keys/lht_ref that lht_ref is
used only once and not documented, rht_ref a bit more often, but also
undocumented. Both are only used in the US. Whatever lht_ref/rht_ref is, it
doesn't seem to be what you are looking for.


On Tue, Mar 27, 2012 at 09:35:37AM +0200, Dietrich Opitz wrote:
> Date: Tue, 27 Mar 2012 09:35:37 +0200
> From: Dietrich Opitz <d.opitz at salondigital.de>
> To: dev at openstreetmap.org
> Subject: [OSM-dev] Directionality of lanes
> <html>
>   <head>
>     <meta http-equiv="content-type" content="text/html; charset=ISO-8859-15">
>   </head>
>   <body bgcolor="#FFFFFF" text="#000000">
>     <br>
>     Hello<br>
>     <br>
>     I have a question about official tags for the diretionality of
>     lanes.<br>
>     <br>
>         You have  left-hand traffic (LHT) in countries like Japan,
>     Australia, England<br>
>         and RHT, right-hand traffic in other countries.<br>
>     <br>
>     The tag "lht_ref" seems to indicate it, but I am not sure which is
>     the right value.<br>
>     There is an other tag "rht_ref" as well, so I am confused.<br>
>     <br>
>     Shouldn't it be a tag like:<br>
>     <br>
>     name: traffic_direction  <br>
>     value:   lht / rht / open<br>
>     <br>
>     The tag "direction" seems to be used for other purposes.<br>
>     <br>
>     <br>
>     With regards<br>
>     <br>
>     Dietrich<br>
>     <br>
>   </body>
> </html>

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Jochen Topf  jochen at remote.org  http://www.remote.org/jochen/  +49-721-388298

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