This article describes the tagging to support a lane assistant.
Lane assist helps a (car)driver into the correct lane, which is especially very useful at unfamiliar junctions. Lane assist has two flavours:
2. the information signs above or next to the road, showing you the destinations of the lanes.
Digital photos or videos (public domain or taken by yourself) are very helpful to acquire destination data. The wiki page for destination=* and the proposed extensions on the destination key Proposed features/Destination details describe how you can enter the acquired destination data into Openstreetmap.
Several examples are available at the moment. More examples will be posted here in the coming months. The examples combine both flavours of tagging for a lane assistant.