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The north-south road is tagged highway=trunk. The road approaching from the west is tagged highway=unclassified. The road approaching from the east is tagged highway=primary. Do I split the primary way as it approaches the roundabout? It is clearly seen that the division between the two lanes stops after a few meters. I ask this question because I am confused about the term "carriageways" used here in the wiki document about roundabouts. |
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If the way joining the roundabout has a barrier island separating the opposing lanes, then split the way into 2 oneway sections / carraigeways (see this example). In this example the road running north - south is a dual carraigeway while the road running east - west is a single carraigeway with barrier islands at the roundabout junction If the way does not have a separating island between the 2 opposing lanes at the junction with the roundabout, then do not split the way (see this example). In this example, all 4 roads intersecting with the roundabout are single carraigeways without islands at the roundabout junction. Okay, I get your point. And also thanks for clarifying the concepts of carriageways and barrier islands :)
(01 Sep '13, 11:35)
madnag4u
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