Key:minspeed

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Public-images-osm logo.svg minspeed
Zeichen 275-30 - Vorgeschriebene Mindestgeschwindigkeit, StVO 2017.svg
Description
Specifies the minimum speed limit on a road, railway or waterway. Note that may refer to minimum achievable speed by vehicle or to minimum movement speed at given moment. Edit this description in the wiki page. Edit this description in the data item.
Group: Restrictions
Used on these elements
may be used on nodesmay be used on waysmay be used on areasshould not be used on relations
Useful combination
Status: de facto

This Key allows the specification of a minimum speed limit. While this information can refer to both of

  1. the posted minimum allowed driving speed, likely with provisions for impeding traffic volumes and situations
  2. the minimum speed a vehicle must at least be able to attain as defined by local law

the effective outcome for known uses (routing) is that vehicles unable of achieving the tagged speed can not and may not use the tagged section of the road.

Units are in kilometeres/hour by default. Limits in miles per hour should get a mph postfix. The knots suffix should be used for speeds specified in knots (nautical miles per hour).

Directional speeds can be specified using the minspeed:forward and minspeed:backward tags. forward refers to the speed limit in the same direction as the OSM way, whilst backward refers to the opposite direction. This is inline with maxspeed=* tag.

Example

minspeed=100 (using default units of km/h)

minspeed=60 mph (explicitly stating units as mph instead of km/h)

Lanes

Where different speed limits are specified for each lane of a road those can be specified using minspeed:lanes=*. Each lane’s minimum speed has to be separated with the “|” character. The first minimum speed is the minimum speed of the leftmost lane (viewed from the direction of the OSM way), the second minimum speed is the speed of the lane right from the leftmost lane and so on until the rightmost lane. Further if they should be specified for each driving direction separately the key minspeed:lanes:forward=* resp. minspeed:lanes:backward=* can be used, whereas lanes:forward applies to the minimum speed limit of the lanes for the same direction as the OSM way and lanes:backward to the minimum speed limit of the lanes of the opposite direction. See therefore also the Examples as well as the article about mapping individual lanes.

Examples

Identification Tagging Remark
Zeichen 525-31.svg
minspeed:lanes=80|50|
Zeichen 526-33 - Fahrstreifentafel; Darstellung mit Gegenverkehr und mit integriertem Zeichen 275 StVO - zwei Fahrstreifen in Fahrtrichtung und zwei Fahrstreifen in Gegenrichtung, StVO 1992.svg
minspeed:lanes:forward=50| Example if there is no barrier in the middle, so is used only one line to represent the road and the line is pointing forward (up) - see forward and backward.

Related tags

  • maxspeed=* - Specifies the maximum legal speed limit on a road, railway or waterway
  • access=* - For describing the legal accessibility of a feature