ncc1701v wrote:This is an important point. Here's one for the other side of the argument: suppose I see a section of road marked orange. I start in and there are no delays so I figure Waze is showing me old information ... until suddenly I have to slam on the brakes for stopped traffic. It would be safer for me if I had fine-grained information.
CBenson wrote:I'm wondering about the statement under Geometry:Approximately 0 degree departure angle = no navigation instruction
I don't think small angles necessarily give no navigation instruction. For instance, I see many ramps that split between a straight section and section that bears off to the right. When I go straight I get an instruction usually a "stay left" instruction. Here is an example where the ramp splits going straight and bearing off to the left. Going straight here you receive a "stay right" instruction.
It seems to me that as most zero deflection roads have the same name and type as the entering segment, most don't get an instruction. However, if they don't have better name match or type match than another segment that has a deflection less than 45 degrees than I believe that they do get an instruction (typically a "keep/stay" instruction, but could be an "exit" instruction).
NOTE: There are exceptions to these rules since geometry is not the only factor which determines instructions. See later sections for how Segment Naming and Type can impact instructions.
kentsmith9 wrote:We are about 9 months behind documenting the Bow Tie intersection. I created an entry for it in the JSG if someone wanted to tackle it.
kentsmith9 wrote:I think it generally covers it although I used it when dual carriageways cross each other as well. I think that would be easy enough to add in without requiring an image.
Maybe we should also add an image of the H-intersection so it is clear what this intersection looked like before the bow tie. For that matter would it make more sense to show the intersecting dual carriageways image.
daknife wrote:Got another Junction style for you to play with, and it's a doozy, The Thru-turn. Driving wise they supposedly are very effective by eliminating left hand turns at the targeted intersection, by moving them away from said intersection. Utah just opened it's second such interchange this last week, and it was fun to map in, now the AM's and I have to watch it and try to adjust and tweak once the new design goes live. And I expect many more to appear as the first one was determined to be a success.
Here is the first one, (I highlighted one segment of each of the three thru-turns in that system).
Here is The new one This one is still kind of sketchy on my layout, I based the layout on the Driver Information Map provided by UDOT (Warning the link points to a PDF.)
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