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Public-images-osm logo.svg highway = milestone
Belgium A2 31km marker.JPG
Stone or metal marker on the side of a road indicating the reference and the distance travelled. Show/edit corresponding data item.
Group: highways
Used on these elements
may be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
See also
Status: de factoPage for proposal

A  highway location marker is the modern-day equivalent of a milestone. Unlike traditional milestones, however, which were originally carved from stone and sited at one-mile intervals, modern highway location markers are made from a variety of materials and, in most countries, are spaced at intervals of a kilometre or a fraction thereof.

How to map

Draw the node node where the milestone is, and add highway=milestone and other tags describing the sign.

Like traffic signs, the node can be placed either directly on the way that represents the road, or separately at the physical location of the sign besides the road. The pros and cons of both methods are similar to traffic signs.

These should be added to the relation of type=route that it refers to as having the Role Role milestone


The following features are based on those described in the article Proposed features/Milestones. This tag has not been approved but is widely used.

Key Value Description Recommendation
highway milestone It's a highway milestone. The position of the node, member of highway way or in place is subject to discussion. Mandatory
distance <distance measure>

A number being the distance from the beginning of the road.

Decimal numbers specified with points are allowed. If no unit is explicitly given, the unit is assumed to be kilometres. To specify a different unit, add a space after the number, then the unit abbreviation (e.g., 35.0 mi).

ref <text> A reference as written or present on the milestone. (Use unsigned_ref=*, otherwise.) Optional
+ ref
<text> A carriageway reference as written or present on the milestone. Accompany with the highway reference in ref=* (preferably also as written or present on the milestone). Optional
marker <Milestone shape> Visual shape of milestone, usually stone, plate, or post Optional

Similar tags

For "modern" milestones look at

For "historic" milestones look at

For utility markers look at


See also

  • waterway=milestone - A landmark of stone or metal to indicate the distance travelled along a watercourse
  • railway=milestone - A stone or metal marker along a railway denoting the distance travelled
  • historic=milestone - A historic marker that shows the distance to important destinations