V formation

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Source:

So, why do they fly in this particular formation? Over the years scientists have came up with theories of why migratory birds such as geese fly in a V-shaped formation. A study done sometime back also shed some light on this particular V formation. This study discovered that birds flying in a V format had lower heart rates than bird flying alone. Why? The aerodynamic V shape formation reduces the air drag (air resistance) that each bird experiences when in flight in comparison to a bird flying solo. This allows them to cover longer distance (thousands of miles) with much less effort. For example, geese can achieve a greater distance of about 70 percent when flying in groups than each flying solo, using the same amount of energy. In this formation, the bird in the lead position will experience a greater air resistance and will have to work a little harder, however, when the lead bird is tired it falls out of position and goes behind into one of the V position lines. Another bird from behind will then quickly move forward into the leading position thus, maintaining the V formation. The same happens for those birds in trailing positions especially those at both extreme ends of the V formation, since they tire more quickly than those in the middle. This cycle continues as they travel to their destination.

Birds and fighter jets do it. Why not hypermilers or even normal commuters?

In the future, I envision many drivers aware of this and cooperate on the highway. I suggest drivers using a peace sign forming a V with the index and middle fingers to show interest and initiate the V formation.

Since not every highway has 3 or more lanes to form a V. I am going to use P to indicate a car (Prius). I come up with the following:

One lane - simply drafting

P
P


Two lanes - two possible position

P
_P

_P
P

Three lanes - different configuration with numbers of cars

_P_
P_ P

_P_
P_P
P_P

Four lanes

_P__
P_P_
P__P

Five lanes

__P__
_P_P_
P___P

This practice may not be practical in public highways but the potential for a mutial benefit (synergy) is there. 70% is a very big gain not to tap into this law of nature.