The Wrong Way to Set Speed Limits ST06

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Watch this video ad-free on Nebula: https://nebula.tv/videos/not-just-bik... • Speed limits are important to keep our roads and streets safe but how are they decided? And what happens when a speed limit is set too high or too low? There are right and wrong ways to set our speed limits, and design our streets, but unfortunately North American traffic planners are firmly stuck in the 20th century when it comes to building safe streets. • To learn more about what's wrong with North American traffic engineering, check out the new book by Strong Towns founder Charles Marhon, Confessions of a Recoving Engineer : • https://www.confessions.engineer/ • Watch the rest of my Strong Towns series here: • Strong Towns • Sign up to Nebula and watch ad-free and sponsor-free: https://go.nebula.tv/notjustbikes • Patreon: / notjustbikes • Twitter: / notjustbikes • Reddit: / notjustbikes • One-time donations: https://notjustbikes.com/donate • NJB Live (my bicycle livestream channel): • / @njblive • --- • References Additional Reading • Understanding the 85th Percentile Speed • Strong Towns • https://www.strongtowns.org/journal/2... • ACCIDENTS ON MAIN RURAL HIGHWAYS RELATED TO SPEED, DRIVER, and VEHICLE • https://www.ohiomemory.org/digital/co... • Road safety - Speed • World Health Organization [WHO] • https://www.who.int/violence_injury_p... • DRIVING SPEEDS AND PEDESTRIAN SAFETY • https://trid.trb.org/view/365827 • Literature review of pedestrian fatality risk as a function of car impact speed • http://transportsafety.ir/wp-content/... • Paris passe à 30 km/h lundi : les habitants de la capitale plutôt favorables • https://www.leparisien.fr/societe/les... • Gezicht in de Carnegiedreef te Utrecht. [1969] • https://hetutrechtsarchief.nl/beeldma... • --- • Chapters • 0:00 Intro • 0:07 Introduction to the 85th Percentile Speed • 1:24 Streets vs. Roads • 2:10 Where the 85th Percentile might make sense (roads) • 2:38 Where the 85th Percentile doesn't make sense (streets) • 3:44 Momentum kills • 4:40 Signs are not enough (driving is subconscious) • 5:49 Bad speed limits (city streets) • 6:39 Bad speed limits (rural streets) • 7:32 Confessions of a Recovering Engineer • 7:52 How to make drivers slow down • 8:18 Good slow street design • 9:05 Safe speeds by design • 9:35 OK Boomer • 9:55 Conclusion • 10:36 Patreon Shout-out • 10:48 Outro

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