ukemike wrote:...there is a thoroughfare called Powell Street. In the map it is a divided road... there is no reason for it to be divided , and it causes problems. Where Powell meets Christie there is a user reported problem of a U-turn that is not allowed. But I can't figure out how to fix it. You are allowed to go through both ways on Christie, and all the various left turns are all allowed. So waze was telling the driver to make a left and make an immediate left (essentially a U turn). Based on the way it is set up now the same problem could happen on the other side of the intersection.
Yep: if left turns are allowed from each road onto the other, U-turns will also be possible.
ukemike wrote:The only way I can see to fix this elegantly is to zip the whole divided road back together. That seems like it would be a lot of work to get even close to right, and if it was done half way it would be a disaster. Any thoughts? It would be nice if you could save a batch of modifications without applying them to the map. So you could do a large bunch of related mods, take your time, get it right, and then apply them all at once to the main map...
IMO, the only reason not
to merge the road(s) into two-way roads is if the actual lanes are so far apart that it causes GPS tracking problems. (And even then, you can still prevent U-turns by merging both roads to single two-way segments, just where they intersect. It can look ugly, but at least it works.)
As for editing the map part-way, don't sweat it:
- Changes don't get published to the clients immediately, so you don't have to merge the entire roadway in one fell swoop. As long as you don't leave segments disconnected overnight, chances are nobody will ever see anything but the finished product.
- If you can't finish the entire road in one sitting, you can always connect the one-way roads to the merged two-way road wherever you have to leave off; just make sure the turn restrictions are correct.