2 ms·
Peak bandwidth of roads happens at surprisingly low speeds, you wanna maximise bandwidth set the speed limit to about 20km/h [1]. Anything higher and road capac
by avianlyric 2y ago
Peak bandwidth of roads happens at surprisingly low speeds, you wanna maximise bandwidth set the speed limit to about 20km/h [1]. Anything higher and road capacity starts reducing.
So reducing the speed limit down to 60/h actually increases the capacity of the road, and reduces the likelihood of rolling traffic jams occurring or persisting.
[1] https://www.researchgate.net/figure/Road-capacity-change-with-vehicle-speed_fig1_317256344 https://www.researchgate.net/figure/Road-capacity-change-wit...
- gruez 2y ago>you wanna maximise bandwidth set the speed limit to about 20km/h [1]. reading the abstract, it looks like the study in question is for city blocks? I'm not sure how applicable it is to highways.
- fbdab103 2y agoThis is a question I have wondered all the time (predominantly while stuck in traffic). Frequently wondered if, during rush hour, posted speed limits should be dropped by X to actually increased throughput. Having not yet read the paper, I am curious if this was factoring in just typical average speed or if lower speeds are also going to have fewer/less severe accidents (accidents having an outsized impact on my road delays).
- lasftew 2y agoMost congested stretches of highway in Switzerland use dynamic speed limits based on traffic for that reason. https://www.astra.admin.ch/astra/de/home/themen/nationalstrassen/baustellen/nordostschweiz/abgeschlossene-projekte/verkehrsmanagement-der-infrastrukturfiliale-winterthur/projekt-im-ueberblick/geschwindigkeitsharmonisierung-und-gefahrenwarnung.html https://www.astra.admin.ch/astra/de/home/themen/nationalstra...