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/ Patreon: https://patreon.com/notjustbikes Twitter: https://twitter.com/notjustbikes Reddit: https://reddit.com/r/notjustbikes One-time donations: https://bunq.me/notjustbikes NJB Live (my bicycle livestream channel): https://www.youtube.com/channel/UC9v57F4xz46KaDsvWfCv8yw --- References & Additional Reading Understanding the 85th Percentile Speed Strong Towns https://www.strongtowns.org/journal/2020/7/24/understanding-the-85th-percentile-speed ACCIDENTS ON MAIN RURAL HIGHWAYS RELATED TO SPEED, DRIVER, and VEHICLE https://www.ohiomemory.org/digital/collection/p267401ccp2/id/55 Road safety - Speed World Health Organization [WHO] https://www.who.int/violence_injury_prevention/publications/road_traffic/world_report/speed_en.pdf 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/uploads/Courses/UrbanRoadsafety/Literature-review-of-pedestrian-fatality-risk-as-a-function-of-car-impact-speed.pdf Paris passe à 30 km/h lundi : les habitants de la capitale plutôt favorables https://www.leparisien.fr/societe/les-parisiens-plutot-favorables-a-la-limitation-de-la-vitesse-a-30-kmh-29-08-2021-YNSZEQ4RFVHGHLD6BPEEMXIPQM.php Gezicht in de Carnegiedreef te Utrecht. [1969] https://hetutrechtsarchief.nl/beeldmateriaal/detail/22e53839-19d0-5e6c-bc