Question

what is a tranquil zone​

Answer 1

Answer:

In these maps tranquil areas were defined as places sufficiently far from the visual or noise intrusion of development or traffic to be considered unspoilt by urban influences. ... These factors were defined following extensive public consultations.

Answer 2

Answer:

In these maps tranquil areas were defined as places sufficiently far from the visual or noise intrusion of development or traffic to be considered unspoilt by urban influences.