Tag:crossing=uncontrolled

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crossing = uncontrolled
Description
A generic crossing with road markings, but no traffic-signals of any type. Show/edit corresponding data item.
Group: crossings
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Requires

When tagged as node:

When tagged as way:

Useful combination

crossing:markings=*

See also

crossing=marked

Status: approvedPage for proposal

A generic crossing with no traffic signals of any type, just road markings; e.g., zebra-crossings.

Which means it is mostly used in combination[1] with highway=crossing (and crossing_ref=zebra), as mentioned in an approved proposal[2].

Clarification for unsignalized and unmarked crossings

Despite the name, crossing=uncontrolled is not for uncontrolled crossings.

For unsignalized and unmarked crossings, please use the tag below :

Tag Definition iD field Taginfo statistics
English French
crossing=unmarked Pedestrian crossings without road markings or traffic signals. Feature Type = Unmarked Crossing Type = Passage piéton non marqué 2 000 000 nodes

You can see in the tag info statistics that it is widely used.

Please note that iD also offers the possibility to choose the below combination :

Tag Definition iD field Taginfo statistics
English French
crossing=uncontrolled A generic crossing with road markings, but no traffic-signals of any type. Feature Type = Marked Crossing Type = Passage piéton non protégé 25 000 nodes
crossing:markings=no No markings of any type. Crossing Markings = Unmarked Marquage au sol pour traversée = Non marqué

However, you can see in the taginfo statistics that its use is marginal, so this one should be avoided.

Crossing without barrier or light signal

crossing=uncontrolled is also used for pedestrian level crossing without barrier or light signal. It may be indicated by a St. Andrew's cross (crossing:saltire=*).

This tag is also used for pedestrian crossings of tramway crossing.

When used as a railway level crossing, if the railroad crossing has barriers, add crossing:barrier=yes instead.

If the railroad crossing has a warning light, add crossing:light=yes instead.

A "de facto" alternative to crossing=uncontrolled : crossing=marked

The crossing=marked tag has been used for a long time and can still be used so it brings confusion, although it is not in iD presets anymore.

It is currently a "de facto" : the tag is in widespread use, and while it was not approved in a proposal process, it has a widespread acceptance among mappers :

Tag Definition iD field Taginfo statistics
English French
crossing=marked A generic crossing with road markings, but no traffic-signals of any type. Feature Type = Marked Crossing

(does not show in iD presets)

Type = Passage piéton non protégé

(n'apparaît pas dans les préréglages d'iD)

1 650 000 nodes

Note that in the below discussion, it is explained that crossing=marked is not used anymore as a preset in iD, and therefore that crossing=uncontrolledis the official tag to use :

-> Should iD be tagging crossing=uncontrolled instead of crossing=marked?#408

Currently Taginfo shows about 1 650 000 nodes tagged with crossing=marked and a stagnation since 2022.

For comparison, crossing=uncontrolled has about 2 700 000 nodes and its use is growing fast :

Tag Definition iD field Taginfo statistics
English French
crossing=uncontrolled A generic crossing with road markings, but no traffic-signals of any type. Feature Type = Marked Crossing Type = Passage piéton non protégé 2 700 000 nodes

So despite its famous misnomer, crossing=uncontrolled should be used instead of crossing=marked for new changes.

Terminology

uncontrolled is a misnomer in the context of pedestrian and bicycle crossings along roadways. In reality, "uncontrolled crossing" is a legal term or traffic engineering jargon that varies in meaning by region but never carries the same semantics documented above:

  • In the United Kingdom, an uncontrolled crossing very often has a pedestrian island (crossing:island=yes), although it can be as simple as the presence of dropped kerbs with tactile paving if the road is too narrow for an island or not busy enough to merit an island. It is never accompanied by specific road markings on public roads, except diagram 1026.1 to indicate the presence of a dropped kerb or diagram 1029 to show the direction to look for approaching traffic, although non-standard road markings may occur on private roads.[3][4] In UK terminology controlled crossings on public roads are crossings controlled by their road markings. Controlled crossings include zebra, parallel, pelican, puffin, pegasus and toucan crossings.
  • In most of the United States, an uncontrolled crossing at an intersection of two roads may or may not have road markings, but an uncontrolled crossing mid-block is required have either road markings or traffic signs, or else it is not a crossing at all.[5][6][7] In some states, such as California, an uncontrolled crossing may or may not have road markings. An uncontrolled crossing is implied at any intersection where one is not visibly marked or signposted, even if it would be a very unsafe place to cross.[8]

Data consumers should be aware that this tag may have been used on a variety of crossing types and avoid making strict assumptions when encountering it. The crossing=marked / unmarked tagging scheme is intended to resolve this discrepancy in conjunction with crossing:signals=*, but the proposals are inactive. crossing:signals=* can be added when using other schemes as well to clear any ambiguity.

How to map

Set a node on the junction where the transition is and add

at the highway
at the railway
by the tram

If the crossing is also mapped as a way, tag it as highway=footway footway=crossing crossing=uncontrolled, highway=cycleway cycleway=crossing crossing=uncontrolled, etc. as appropriate.

Tags to use in combination

  • bicycle=yes/no - Access permission for cyclists
  • tactile_paving=yes/no - Indicate if a specific place can be detected or followed with a blindman's stick
  • wheelchair=* - Indicate if a special place can be used with wheelchairs

Tag growth evolution

Graphs of different schemes (uncontrolled / marked) are show on following page link:

Examples

Software support

Editors

There is an implementation of a JOSM preset, which is using tags highway=crossing + crossing=uncontrolled + crossing_ref=zebra for a zebra-crossing (crosswalk) object.

Renderers

osm2streets (see AB Street) draws parallel white bars, equating the tag with crossing=marked.

Routers

OsmAnd penalizes the crossing by less time than crossing=unmarked and crossing=traffic_signals. [1]

MOTIS Per Pedes Routing indicates whether the crossing is marked [2][3] and can calculate a detour that avoids unmarked, unsignalized crossings. [4]

OpenSidewalks converts this tag to crossing=marked. [5]

See also

References

  1. taginfo: crossing=uncontrolled combinations
  2. Approved_features/Road_crossings/Usage
  3. “London Cycling Design Standards” (PDF). London: Transport for London. 2014. p. 8. Retrieved November 7, 2022. 
  4. “Pedestrian crossings”. London: Merton London Borough Council. 
  5. Blackburn, Lauren; Zegeer, Charles; Brookshire, Kristen (January 2018). “Guide for Improving Pedestrian Safety at Uncontrolled Crossing Locations” (PDF). Washington, D.C.: Federal Highway Administration Office of Safety. p. 1. Retrieved March 1, 2022. 
  6. Zegeer, Charles V.; Stewart, J. Richard; Huang, Herman H.; Lagerwey, Peter A. (February 2022). “Safety Effects of Marked vs. Unmarked Crosswalks at Uncontrolled Locations: Executive Summary and Recommended Guidelines” (PDF). McLean, Virginia: Federal Highway Administration Office of Safety Research and Development. p. 2. Retrieved March 1, 2022. 
  7. Wickert, Gary L. (October 29, 2018). “Why Did the Plaintiff Cross the Road? Understanding Pedestrian and Crosswalk Laws in All 50 States”. Hartford, Wisconsin: Matthiesen, Wickert & Lehrer, S.C.. Retrieved March 1, 2022. 
  8. “Uncontrolled Crosswalk Safety” (PDF). San Rafael, California: Marin County Department of Transportation. October 1, 2012. Retrieved March 1, 2022.