New site development in the vicinity of existing heliports can have a significant effect on heliport operations. In some instances, it may mean modifications to the heliport flight paths are necessary. In some circumstances, the heliport is closed as the required unobstructed airspace is no longer available and plans for relocation are necessary. Participation in the master planning process with health regions and hospitals helps to identity potential conflicts and develop solutions that can be implemented in accordance with a specific time frame. This pre-planning ensures that helicopter air ambulance service at a particular site is maintained. Requirements of new site development to maintain heliport operations are identified, such as roadway traffic control measures, obstruction lights or modifications to the building structures to maintain heliport airspace clearance.