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1.3 Scale of Air Travel within the take this trip by transferring at a point such as Newark (EWR),
Two Study Areas LaGuardia (LGA), or Philadelphia (PHL). From the vantage
point of OD analysis, they are portrayed here as flows between
This section deals with the city-pair volumes of existing air the Boston region family of airports and the Richmond/Norfolk
travel, which are perhaps better described as "metro-region family of airports. These East Coast aviation flows are examined
pair" passenger volumes between "families of airports." Clas- on an airport-by-airport basis in Chapter 4 of this report.
sic origindestination (OD) "desire lines" are presented for the
East Coast study area and the West Coast study area, making
possible a revealing comparison of the aviation passenger 1.3.2 Metro-area to Metro-area Pair
volumes between the two coastal areas. Air Passenger Flows within the
West Coast Study Area
1.3.1 Metro-area to Metro-area Pair Figure 1.4 summarizes air passenger travel within the West
Air Passenger Flows within the Coast study area between January and December 2007. It can
Eastern Mega-region be best understood as a desire line diagram showing the flows
between airports of origin to the airports of destination of
Figure 1.3 summarizes air passenger travel within the East
about 20 million air trips. As in Figure 1.3, flows are expressed
Coast study area between January and December 2007. It can
be best understood as a desire line diagram showing the flows from their airport of origin to their airport of destination
between airports of origin to the airports of destination of without reference to possible use of transfers or connections.
somewhat under 10 million air trips. Trip makers between, say, These lines represent the flow of airport passengers between
Manchester, NH (MHT) and Richmond, VA (RIC) may under- the large metropolitan areas and other large metropolitan
areas. These West Coast aviation flows are examined on an
airport-by-airport basis in Chapter 4 of this report.
Note: The absence of a line between two areas means that the number of air trips is Note: The absence of a line between two areas means that the number of air
insignificant. trips is insignificant.
Figure 1.3. Air passenger flows between metro Figure 1.4. Air passenger flows between metro
regions in 2007: East Coast (4). regions in 2007: West Coast (4).