Tag:lane_markings=yes

lane_markings = 
Description
Specifies that a highway has painted markings to indicate the position of the lanes Show/edit corresponding data item.
Group: highways
Used on these elements
should not be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Status: de facto

The tag lane_markings= can be used on a road to make it clear that the lanes on that road are marked with painted lines, coloured pavement, or in other permanent markings.

Examples

See also