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As far as I'm aware, there are certain "motorways" or corridors which air traffic uses, rather than navigating more directly from origin to destination.
I remember listening to a documentary which mentioned that in the early days of the standardisation of flight, the navigation system was being decided. The Americans put forward the "motorways" system because they already used intermittent beacons to guide aeroplanes across the country, which naturally form a kind of road system analogue.
While the British (or Europeans) put forward a direct point-to-point system.

Anyway, the US won, and everything was hunky-dory until we get to today with our extremely crowded skies. So the documentary went on to say that investigations were underway into a new system in which each plane communicates with the planes around it continuously, forming and reforming impromptu mesh networks to avoid collisions. In this way, planes can fly more direct routes and potentially save time and fuel.

My question is whether or not this suggestion is feasible, is it being investigated, and is there a push to move towards it at a level which could affect the international air community?

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    $\begingroup$ Possible duplicate of Why do RNAV airways exist? $\endgroup$ – StephenS Nov 14 '18 at 15:53
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    $\begingroup$ @StephenSprunk Thanks for supplying a term I can use in subsequent searches, but I think my question is more along the lines of "Is modern technology making RNAV airways obsolete?" $\endgroup$ – thosphor Nov 14 '18 at 15:58
  • $\begingroup$ Ironically, the U.S. nowadays is far closer to a mesh-network approach, with aircraft going pretty close to point-to-point, than Europe, where aircraft are compressed onto a relatively few, congested routes. $\endgroup$ – Sean Aug 20 '19 at 3:58
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Currently SESAR (Single European Sky ATM Research) works on implementing a similar system in the European Union.

As stated on the website :

SESAR’s vision builds on the notion of trajectory-based operations’ [...] meaning that aircraft can fly their preferred trajectories without being constrained by airspace configurations.

The aim is to improve capacity in the European sky and be more flexible among the actors too (like temporary closed airspace for military training, handle volcanic eruptions and disruptions of the airspace).

SESAR has different projects to address the needs of imporving Air Traffic Management in Europe that you can find on their website.

Edit

There are current concrete solutions from SESAR and EUROCONTROL (the European organisation for ATM in Europe) to make this happen at the moment in the European airspace, such as the Free Route Airspace with set target of implementation (that we could consider "serious effort") :

By the end of 2017, 51 ACCs have either fully or partially implemented Free Route Airspace operations [...] By the end of 2019, most European airspace is expected to have implemented FRA, with all airspace having this type of operations by 2021/2022.

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