Optional "o'clock scheme" roundabout routing instructions

[Peter0]

Describe the idea

Give the user the option to have roundabout routing instructions that uses a "o'clock scheme".

What is a "o'clock scheme"? It uses a thought of a clock-dial in order to describe angles in 30° units as hour readings. Consider a rectangular crossing of two streets, then going straight on is called "12 o'clock direction". Turning left is called "9 o'clock", turning right "3 o'clock". A U-turn would be called "6 o'clock". Depending on the number of streets or a non-equidistant arrangement of streets, any of the other o'clock readings may be a sensible direction announcement.

Advantages:

• One is independent of counting errors either by the mapper or by oneself.
• One is independent of misunderstandings.("Should I count the smaller emergency driveway or not?" or "I didn't know that this exit is a oneway and therefore not counted by the router")
• One is independent of mapping errors like forgotten oneway status of exiting ways.
• I think it is especially useful in case of mini-roundabouts; it would be a good compromise between "turn left"- vs. "3rd exit"-style announcements.

Expected behaviour

When the roundabout is ahead, annouce "exit the roundabout in 9 o'clock direction" (instead of "take 3rd exit" in case of standard 4 street-arrangement).

Nevertheless, there should be a size limit. If there is a roundabout of, say, 1 km diameter, probably the driver has lost her/his sense of angle before reaching the correct exit.

By an independent second option the user may switch to this scheme also by ordinary non-roundabout junctions.

Note that I'm not an english native speaker, so I don't know the native usage of the o'clock scheme. Indeed even I don't know if "o'clock scheme" is a known term for this concept. In german, one would say "verlassen Sie den Kreisverkehr in Richtung neun Uhr" or "verlassen Sie den Kreisverkehr in Neun-Uhr-Richtung"

Alternatives you've considered

Alternatively, there should be the previous behaviour possible. Still hoping that mini-roundabouts may be announced optionally in the "3rd-exit"-style as third option.

Context

No response

[vmicho]

Dunno. Never heard about "o'clock" being used maybe outside the army. More useful would be, similato to as sometimes waze does, to announce something like "on roundabout, go straight" or a combination of exit+direction: "on roundabout, take the 1st exit, slightly right". This would also require OSM to have correct geometry of entry/exit VS roundabout, which is often bad (usually when the exit is split in two 1-way segments, this changes angles drastically (and the roundabout/exit minimap) -> i've fixed few of them today)