|This key describe various emergency services|
|Used on these elements|
|Documented values: 42|
|Status: de facto|
|Tools for this tag|
As an access tag
emergency=yes is used to indicate that a given road is accessible to a emergency services, what may be considered as a strong hint that given road is free from physical obstacles. Note that as emergency vehicles are by definition not restricted by legal access - so for example road with highway=service + access=private may be accessible to emergency vehicles if there are no mapped physical obstacles.
This is used to describe the location of emergency facilities and equipment. See the page Emergency for an introduction on its usage.