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Emergence of collective oscillations in human crowds

nature.com

11–20 of 43 posts

Re: Emergence of collective oscillations in human crowds

#11

I noticed a similar phenomenon while driving on the highway. Vehicles on the other side of the road seem to group up and travel in clusters. Like traffic naturally oscillates into these packets?

This is a well known phenomenon in traffic engineering and can be modeled with e.g. fluid dynamics.

https://en.m.wikipedia.org/wiki/Traffic_wave

Re: Emergence of collective oscillations in human crowds

#12

I noticed a similar phenomenon while driving on the highway. Vehicles on the other side of the road seem to group up and travel in clusters. Like traffic naturally oscillates into these packets?

There’s a good site all about that: http://trafficwaves.org/

Re: Emergence of collective oscillations in human crowds

#13
I recommend William Bialek's lectures who deep dives into how maths can be applied to messy macro-world of biology, neurons, cells, birds, so on and so forth.

Precision and emergence in the physics of life with William Bialek

https://www.youtube.com/watch?v=c1hd5El2gqc

Re: Emergence of collective oscillations in human crowds

#14

I noticed a similar phenomenon while driving on the highway. Vehicles on the other side of the road seem to group up and travel in clusters. Like traffic naturally oscillates into these packets?

The traffic waves mentioned in the other replies are not the same as clumping. People clump up while driving, even on the emptiest of highways, because they are bad drivers. This was happening long before automatic braking, but that has made it more common.

Re: Emergence of collective oscillations in human crowds

#15

I noticed a similar phenomenon while driving on the highway. Vehicles on the other side of the road seem to group up and travel in clusters. Like traffic naturally oscillates into these packets?

The traffic waves mentioned in the other replies are not the same as clumping. People clump up while driving, even on the emptiest of highways, because they are bad drivers. This was happening long before automatic braking, but that has made it more common.

How is clumping indicative of bad driving?

Re: Emergence of collective oscillations in human crowds

#16

I noticed a similar phenomenon while driving on the highway. Vehicles on the other side of the road seem to group up and travel in clusters. Like traffic naturally oscillates into these packets?

This is a well known phenomenon in traffic engineering and can be modeled with e.g. fluid dynamics. https://en.m.wikipedia.org/wiki/Traffic_wave

I had heard of traffic waves in congestion, but this phenomenon happens on open roads. I often notice vehicles forming packets when there isn't traffic. Like natural clustering? If I drive the speed limit, cars will start to bunch up behind me, even when there is an open lane. Then, a driver will speed up in the passing lane, but when they reach me, they often slow down slightly or a lot and ride next to me without passing.

Re: Emergence of collective oscillations in human crowds

#17

Earlier quoted context omitted.

The traffic waves mentioned in the other replies are not the same as clumping. People clump up while driving, even on the emptiest of highways, because they are bad drivers. This was happening long before automatic braking, but that has made it more common.

How is clumping indicative of bad driving?

Unnecessary clumps are bad. They make merging and passing harder, desensitize you to nearby cars' presence, cause night vision problems, etc.

A good driver will first notice they are in an unnecessary clump, and a bad driver probably won't.

A good driver will try to minimize the the time they spend relatively motionless to other cars (other than behind them at a safe follow distance). A bad driver either doesn't realize as in the previous point, doesn't care, or actually prefers it as some kind of crutch. Sometimes the leader of the clump ends up that way because they will speed up whenever those behind them try to pass. Sometimes the rear of the pack is a driving zombie who will close any distance between them and the car in front, but will never choose to pass. And so on...

Re: Emergence of collective oscillations in human crowds

#18

Earlier quoted context omitted.

The traffic waves mentioned in the other replies are not the same as clumping. People clump up while driving, even on the emptiest of highways, because they are bad drivers. This was happening long before automatic braking, but that has made it more common.

How is clumping indicative of bad driving?

Because it indicates that they are not driving to the conditions of the road and being attentive.

Re: Emergence of collective oscillations in human crowds

#20

Earlier quoted context omitted.

The traffic waves mentioned in the other replies are not the same as clumping. People clump up while driving, even on the emptiest of highways, because they are bad drivers. This was happening long before automatic braking, but that has made it more common.

How is clumping indicative of bad driving?

Left lanes are for passing. If you are in the left lane and not passing, guess what.
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