|Total number of traffic lanes available for motorised traffic in both directions at a single lane.|
|Used on these elements|
|Status: de facto|
|Tools for this tag|
Some roads have special lane for making a turn that is available in both directions.
It is especially popular in USA and Canada and as this countries drive on right side, such lane is used for turning left.
Common term for such lane is "two-way left turn lane" (TWLT), "center left-turn lane", "center turn lane" or "median turn lane" or "suicide lane".
Originally "suicide lane" referred to lane in the center of a highway meant for passing in both directions that nowadays are fairly rare.
This tagging proposed long time ago, proposal itself never went through vote but idea was good one and is commonly used to tag this case.