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> Self-driving cars in a line could detect and link up with each other, sharing sensor data on obstacles up ahead. In the end, this has the potential to safely reduce the gaps between cars at higher speeds and thus actually increase throughput, since the congestion issues with human drivers reacting separately would not apply.

Isn't this already true to a certain extent with map software? It automatically directs you to the fastest route—congestion relief is, in a way, built-in to open infrastructure.

It seems to be the topology of the highway system would have a much larger impact on congestion than the drivers themselves. Among other things, it's going to be a long time (hopefully never. IMHO) before human drivers are off the road.



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In my experience, including such prestigiously congested roadways as the 405, 101 and the 10, it has a lot to do with behavior (ie. the 'caterpillar' effect) than route.

Rather, it's not physical space, but delays in processing speed adjustments. Distracted drivers accelerate and brake late, causing complete stops and quick acceleration to catch up.


Well, I can't speak for LA, but you have to acknowledge the role of having all those drivers on the road in the first place. Distributed better, jitter in driver behavior should tend towards having no effect with the distance between cars.

Yeah, you're right, physical density does have a role.

There's a sort of critical mass that happens; traffic flows well even though everyone is being dumb vs. traffic stopping when everyone is being dumb...


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