Not all urban areas have the same general noise level, and parks and open spaces within urban areas may be especially valued for their tranquillity.
When overflying urban areas, we could seek to avoid overflight of parks and open spaces by positioning routes over residential and commercial areas, or we could seek to reduce the number of people affected by overflight by positioning routes over parks and open spaces where possible.
When designing airspace in urban areas, we could:
A. Design flight paths over parks and open spaces rather than residential areas; or,
B. Design flight paths over residential areas, avoiding aircraft overflight of parks and open spaces.