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Whats wrong with this roundabout ?

-1

Im adding man_made=embankments, https://www.openstreetmap.org/#map=18/52.47369/4.77315 The roads (ways) are nicely figured in OSM,s slippy map, but the roundabout tagged highway=trunk is turned into a black line when added man_made=embankment. Whats the reason for this exception ? Or just being impatient ?

roundabout embankment trunk

asked 02 Sep '14, 16:11

Hendrikklaas
9.3k●207●238●387
accept rate: 5%

One Answer:

When I check right now the data, the tag "man_made=embankment" is removed. But I would guess that could be a rendering issue. Combining these two attributs is a bit dangerous for a roundabout since both of them are depending on the direction of the way (the transport flow for the roundabout and the high/low side for the embankment). What I could advice is :

- read the wiki about embankment. It says that "embankment=yes" is much more popular in OSM (something I verified with taginfo). The direction of the way is important : cf "Add man_made=embankment to a way with the left-hand side of the way being the high side and the right-hand side being the low side"
- It also says that you can micro-map the embankment by tracing separate ways (detached from the highway)
- in general, you don't need a "oneway=yes" on "junction=roundabout". This is probably the only case in OSM where oneway is clearly implied (it's more controversial for motorways).

answered 02 Sep '14, 16:42

Pieren
9.8k●20●83●157
accept rate: 15%

Hi Pieren thanks, I removed it, because the effect surprised me. I’ll have to survey embankments too and stop adding man_made=embankment to an existing way. The easiest solution.

(02 Sep '14, 22:09) Hendrikklaas