DirectRoutingAirspace
European Supplement
urn:aero:ses:eurocontrol:airm:1.0.0:ConceptualModel:Subjects:AirspaceInfrastructure:Airspace:DirectRoutingAirspace
Airspace defined laterally and vertically with a set of entry/exit conditions where published direct routings are available within this airspace, flights remain subject to air traffic control.
Source:
SESAR,