good thread a tangent: it is very hard to keep "ownership" of a 5 carlength gap ahead of one in traffic. "you're not using that!" is the ethic. And thus a safety margin is eroded so that some idiot can get 25 feet closer to his destination.https://twitter.com/drethelin/status/1120743461282512897 …
if traffic planners care about throughput but not latency, then they're terrible and should be hung
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It's only if there are extreme outcomes that thruput and latency become decoupled. It's closely analogous to scheduling in a multitasking OS. Variance is a customer outcome was well as mean. If you demand low variance then you increase the mean.
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When you or I slow down to maintain following distance, the overall effect is not entirely clear because of higher order effects. For just one person, the effect is to slow traffic a bit and increase accident risk for those who decide to pass.
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