government. Most private flights and light aircraft operate from the three smaller General Aviation (GA) airfields at the edges of the Auckland conurbation; Ardmore Airport south of the city which is NZ's busiest airfield in terms of movements, North Shore Aerodrome to the north and Parakai Airfield to the north west. Mechanics Bay near the city centre, was the first international airport, and was used for many years as a base for flying boats of TEAL and amphibians of Tourist Air Travel and Sea Bee Air. The area now holds a heliport and the Auckland Marine Rescue Centre. A Royal New Zealand Air Force facility at Hobsonville has been vacated and is currently under redevelopment primarily as a residential area, although some light commercial and industrial uses (for example super-yacht building) are present. Walking and cycling Cycling Before 2015 there was relatively little investment into improving cycling infrastructure in Auckland, with most facilities being simply "paint on a road".This led to low rates of cycling, with the 2013 census recording only 1% of journeys to work being made by bicycle. Increased funding for cycling from the New Zealand Government and Auckland Council in the mid-2010s led to the development of higher quality cycling infrastructure in Auckland, including the Grafton Gully cycleway, the Quay Street cycleway and Te Ara I Whiti (the Lightpath) between 2015 and 2017. Overall, 52 kilometres of new cycleways is planned to be delivered between 2015 and 2018. These improvements have already led to growth in the uptake of cycling. The northwest cycleway, which links with a number of projects delivered in recent years, saw its usage increase by 44% as a result of these improvements. Auckland Transport and the New Zealand Transport Agency have developed a ten-year investment programme for cycling in Auckland that focuses on rolling out high quality cycling infrastructure to different parts of the city. Walking All travel begins and ends with a walking trip, even though a relatively small proportion of "journeys to work" are made primarily by walking or jogging. At the 2013 census 4.5% of Aucklanders walked or jogged to work, up from 3.9% in 2001. Efforts are being made to improve the attractiveness of walking. A number of shared space projects were planned in several streets in the Auckland CBD. These upgrades aimed to improve the ability of pedestrians, cyclists and (slow-speed) motor vehicles to share the same transport