|access = official|
|A way dedicated for a particular use by law.|
|Used on these elements|
|Tools for this tag|
The value official for the access tags foot, bicycle and horse indicates a way legally dedicated to specific modes of travel by a law or by the rules of traffic. The tag is to signify the official, binding, legal nature of the dedication. A way may have several official dedications.
In most cases, the official dedication also means that other modes of travel are prohibited. In some countries like Germany such a usage right is also compulsory, travelers must not use a parallel way if an official way is marked. But exclusive or compulsory use is only a deduction based on local laws and traffic rules, it is not the meaning of the tag "official". For compulsory ways use bicycle=designated on the cycleway affected and tag bicycle=use_sidepath on the highway which the cyclist should not use. For pedestrians traffic on footways use sidewalk:foot=designated and foot=use_sidepath on the road.
The tag should only be used where there is a an official traffic sign or an unambiguous law.
Difference to *=designated: "Official" is stronger than "designated". "Offical" is only for ways marked with a legal traffic sign. Note that *=designated is typically used in this situation.
Usage compared to *=designated: *=designated tag has also significant support and is widely recognised unlike *=official access value that is less popular in usage and support.
Note on status
This value was proposed in January 2009 but never entered voting, and is considered abandoned. There is some worldwide usage of the value however.