|highway = milestone|
|A stone or metal marker on the side of a road denoting the reference and distance travelled.|
|Used on these elements|
|Status: In use|
|Tools for this tag|
|This tag page is a stub. You can help OpenStreetMap by expanding it.
Similar pages for structural reference: Tag:railway=tram, Tag:waterway=dock.
Ais one of a series of numbered markers placed along a road or boundary at intervals, usually of one unit (i.e. mile or kilometer) or, occasionally, subparts of a unit. They are typically located at the side of the road or in a median. They are alternatively known as mile markers, mileposts or mile posts (sometimes abbreviated MPs). Mileage is the distance along the road from a fixed commencement point.
Note that although the name "milestone" may be inaccurate by modern standards if due to units shown (i.e. - kilometers, not miles) or construction material (i.e. - metal, not stone), "milestone" is still more commonly used than more technically correct terms such as.
For "modern" milestones look at
For "historic" milestones look at
The following features are based on those described in the article Proposed features/Milestones. This tag has not been approved but is widely used.
ref=* is optional, only to be used if the milestone actually has a reference number written on it.
distance=* is optional, only to be used if the milestone actually has a number being the distance from the beginning of the road/rail.
- pk=* has also been used for this purpose, but a discussion on the tagging list in May 2013 suggests distance=* is a better choice than either pk=* or kp=*.
- If no unit is explicitly given, the unit is assumed to be kilometers. To specify a different unit, add a space after the number, then the unit abbreviation (e.g., <tag k="distance" v="35.0 mi"/> ).
- Decimal numbers specified with points are allowed.