Specifies the available list of enumerations for the various types source concerning road features RoadFeatureSourceCode Fixed (permanent, often metal) road sign, with road signs as recognised under the Vienna Convention on Road Signs and Signals, 1968 fixedPlateRoadSign Road sign displayed on a variable message sign or other dynamic display equipment, with road signs as recognised under the Vienna Convention on Road Signs and Signals, 1968 variableMessageSign Temporary (non-permanent) road sign, as recognised under the Vienna Convention on Road Signs and Signals, 1968 temporaryRoadSign Road traffic regulation regulation Other road feature, not covered by the other enumerations otherRoadFeature