On Sat, Jan 07, 2012 at 09:13:25AM -0500, Francisco Moraes wrote:
But why do I need the turn restriction here? I haven't seen this type of routing problem in other roads that have a similar layout where the split/divided ways merge into one. I thought there would be some discontinuity somewhere but I didn't see if the OSM data to explain why the routing was broken.
Right, that's why I asked where you were heading to and what the routing suggestion looked like. Was the Garmin unit configured to auto-recalculate, and was there some bad coverage (tunnels) that caused it to "jump" somewhere else and back? Or could there be some error in the map data elsewhere, such as disconnected ways or oneway arrows going head-to-head or back-to-back? Can you download the region around your route and compile it with mkgmap with logging enabled? Does it complain anything relevant? I do not travel by car that often. A year or two ago I remember a similar situation where a split way was merged. There was some error in the map data at that point, but I cannot remember what it was and cannot deduce it from the history of the ways. FWIW, it probably was node 27536320 at lat=60.4558175, lon=24.8496977, and I was heading west. Marko