simplify road entity

:RoadEntity a saref:FeatureKind ;

  saref:hasProperty :AbsolutePosition , :Height , :Length , :RelativePosition , :Shape , :Width ;

  saref:hasState :Movement ;

  rdfs:comment "An entity present on the road in the neighbouring area of a vehicle"@en ;

  rdfs:comment "Road side sensors measure properties (such as speed, position, dimension, direction, etc.) of road entities. Types of relevant road entities are Pedestrian, vehicles, obstacles, traffic signs, etc."@en ;

  rdfs:label "RoadEntity"@en .

:RoadObject a saref:FeatureKind ;

  skos:broader :RoadEntity ;

  rdfs:comment "Road side sensors measure properties (such as speed, position, dimension, direction, etc.) of road objects. Types of relevant road objects are Pedestrian, vehicles, obstacles, traffic signs, etc."@en ;

  rdfs:label "RoadObject"@en .

:RoadSideEquipment a saref:DeviceKind ;

  skos:broader :RoadEntity ;

  rdfs:comment "A road side equipment can be either a simple data relay between vehicles and infrastructure or between the vehicles themselves, or it can run applications. It is usually high mounted in existing equipment, such as a street light, city traffic light, VMS or highway sign, or has its own pole."@en ;

  rdfs:label "TrafficManagementCentre"@en .

:Vehicle a saref:FeatureKind ;

  skos:broader :RoadEntity ;

  saref:hasProperty :AbsolutePosition , :RelativePosition , :RoadTopologyPosition ;

  saref:hasProperty :BrakeCapacity , :Height , :Length , :Width ;

  saref:hasProperty :Destination , :Route , :RendezvousLocation , :JoiningTime ;

  rdfs:label "Vehicle"@en .

:VehicleEnvironment a saref:FeatureKind ;

  saref:consistsOf :RoadEntity , :Vehicle ;

  saref:consistsOf :RoadEntity ;

  saref:hasState :VehicleEnvironmentState ;

  rdfs:comment "The vehicle environment is made of entities which are present on the road in the area around the vehicle"@en ;

  rdfs:label "VehicleEnvironment"@en .