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Public-images-osm logo.svg hazard = turns
MUTCD W1-3L.svg
A section of road that turns sharply two times, in opposite directions Edit or translate this description.
Group: Hazards
Used on these elements
may be used on nodesmay be used on waysshould not be used on areasshould not be used on relations
Useful combination
See also


Status: approvedPage for proposal


A reverse turn hazard is a section of road that turns sharply two times in opposite directions, presenting a hazard to motorists. Turns present a hazard of obscured visibility of oncoming traffic as well as a short turning radius. This tagging is applied to roads that are signed for dangerous turns and should not be applied indiscriminately to roads merely because they have a turn.

How to Map

Tagging can be applied to the section of road with the turns or the location of the signage:

  • Place a node node at the location of the turn hazard traffic sign, tagged traffic_sign=hazard (or code) + hazard=turn.
  • Tag a node node along a highway=* way way at the location of the sign
  • Tag the section way of highway=* where the reverse turn hazard is present.

Signage examples

The Netherlands The Philippines United States of America

Nederlands verkeersbord J5.svg Nederlands verkeersbord J4.svg

Philippines road sign W1-2 L.svg Philippines road sign W1-2 R.svg

MUTCD W1-3L.svg MUTCD W1-3R.svg

Possible Tagging Mistakes

If you know places with this tag, verify if it could be tagged with another tag.
Automated edits are strongly discouraged unless you really know what you are doing!

See Also