An airport will have one, usually two freeways that connect to it – each with at least one on and offramp. There is usually also a surface road nearby for freight companies and other services associated with the airport.
Then, within the airport, there are separate areas for arrivals and departures, as well as short term parking, long term parking, and an area for rental cars. The terminal also needs a loop so that people don’t need to get onto the freeway if they were picking someone up who wasn’t at curbside yet.
All of these places need to connect to each other, and so there need to be lots of lanes and ramps for that, which makes airports complex.
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