Tag:crossing=yes

crossing = 
Description
A crossing, but the type is unknown. Using this tag is discouraged. Show/edit corresponding data item.
Group: crossings
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination

When tagged as node:

When tagged as way:

Status: in use

This tag is used for crossings where the type of crossing is unknown, but using it is discouraged. Always try to specify the crossing type.