Originally Posted by USA_flyer
Any airport with multiple crossing runways, Chicago for instance.
Any airport with parallel runways too close together which stops both runways from being used at the same time, Istanbul for instance.
SFO has both "features". The parallel runways can be used simultaneously in clear weather, but foggy weather requires that only one be used at a time, causing delays.
Of course, lack of space for expansion makes it difficult for many of the airports to build better runway configurations.