What is the impact on road usage and congestion?
Whenuapai is the closest airport to over 500,000 people in Auckland. By 2020 this figure is projected to be 1,000,000 people. It is calculated, using the Auckland land transport model, that the value of reduced road congestion resulting from successful civil use of Whenuapai has a value of $341 million. This calculation assumes that time wasted in traffic is valued at about $15 an hour.