Key:width:lanes:forward

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This tag is used by some mappers to enter the widths of individual lanes of a highway for the "forward" direction. It is used in combination with width:lanes:backward=*.

There is also width:lanes=* for both directions, although it is argued that this might make less clear what lanes are meant with two-direction traffic. Currently (Dec 2024) both variants are used.

The syntax generally follows Key:width and Key:*:lanes

Usage

Enter the width of each lane in m (or specify diverging Units), separated with |.

Example: If there are three lanes of width 1.5 m, 2.5 m, 2.5 m in the forward direction and two lanes of width 3 m, 2.5 m in the backward direction, add the tags width:lanes:forward=1.5|2.5|2.5 and width:lanes:backward=3|2.5

A simpler variant would be width:lanes=1.5|2.5|2.5|3|2.5

Some mappers use values like width:lanes:forward=|1.5 which is hard for users to understand.

see also

• Key:width
• Key:*:lanes
• Forward & backward, left & right