Built systems 175Distance from city center to nearest major transportation terminals (km)LondonBerlin+Rome+Bucharest+Stockholm+Barcelona+NantesChicago+San Diego/Tijuana+Philadelphia+OttawaEdmontonPortlandAtlantaMexico CitySantiagoBrasilia+TegucigalpaIquitos- Cairo
*
Nairobi+Bamako+East LondonAbecheBeijing**
MoscowSeoul*
Te h r a n*
Sapporo+UlaanbaatarErzurumKagoshimaBangkokKuala Lumpur+CuttackSamarindaCanberraRahimyar KhanEurope North
AmericaLatin
AmericaAfrica West-East
AsiaSouth Asia-
AustraliaAverageGeographic area, with cities from large to small population90
70
30
50
10
0
= Shipping/ferryport
= Nearest airport
= Second nearest airport105 128Figure 7.6Distance from city center to nearest coastal port and two nearest airports
relative to geography and city size. 10 km = 6.2 mi. See Figure 7.2 caption.Cropland is the primary land use in most urban regions so land lost to airport
construction, transportation, and associated facilities is normally insignificant
regionally. Typically built areas around an airport grew up around it. Runway
and infrastructure expansion of a major city or military airport is a strong force,
so the airport should be located distant from key natural and cultural resources.