Depends on how long it is. If it's under, say, 50ft, I'd not. All the house numbers can be attached to the main road.

I know that I'm in the minority on how to provide these types of instructions and that different people like their instructions in different forms. But, if it were me, my guidance would be functional - draw in the street if a turn instruction would help a driver routed to a location on the street, if turn instruction would not help a driver don't draw the street. Then maybe provide the physical parameters as guidance to where a turn instruction is likely to be helpful.

kentsmith9 wrote:In the case of a road named "Jefferson Way" with a T-intersection connecting to a very short 50 ft road called the same "Jefferson Way", does the routing engine give a turn instruction to that short road given all the segment names are the same?

My understanding is that yes for a T intersection (or anytime the angle of deflection is over 45 degrees) the routing engine will give a turn instruction.

kentsmith9 wrote:But only if the junction is more than one exit direction, e.g., a right turn at an "L" that has a junction and not just a node, does not give a right-turn instruction even at 45-90 degrees. Correct?

Correct.

Despite whatever we use as guidelines for these, if they are not mapped, then someone will probably map it eventually. Especially in a mature area with little to edit for new editors. This has just been done by a level 2 editor a few days ago for the OP example.

Since we have no mechanism to prevent the addition of a segment, we would have a revolving door situation if we deleted it.

So in light of the recent edit, I move the appropriate house numbers to the new segment.

The only reason I can think of to add a segment to the map here would be if the next street to the north were closer to one of these houses than Willimantic Dr--in which case a GPS-based destination might navigate you to the wrong street. This may no longer occur with Waze using its own house numbers, though.

I also agree if the road is less than about 50 ft and the same road name, there is no need to add a small segment. On the other hand, I would not delete the segment if I found one there.

The other reason to add it is for the visual for the driver to see there is a small portion of road there on their map.

toddgrissom wrote:If its there or being added, always name it?

I generally find that if it is long enough, then it has a unique name. When it is short, it tends to just be the same name as the road to which it connects (and then begs the question if it needs to be drawn in). But if long enough and not a unique name, then it has the same name as the main street it connects.

Another way to separate the two is the road Willimantic Ct to the south is actually drawn as a road and has a full bulb end of a cul-de-sac and the road on the north does not. In fact it appears more like an arch. Since the original map maker of the drawing above did not show the road, then I don't think we should. I propose the following for the Wiki:

Draw in street if any of the following are true:
* It has a unique name from the street it branches (this should be obvious, but we may as well help be clear)
* It forms a "bulb" at the end, although not all qualifying roads will actually have a bulb formation
* The road is longer than 75 ft (or 25 meters)

Do not draw in the street if all of the following are true:
* There is no official street name
* It is shorter than 75 ft (or 25 meters)
* When approaching the street, you can see all the houses from 150 ft (or 75 meters) away