This idea goes back a long way. In 1923 42,000 Cincinnati residents petitioned for mandatory speed governors to limit cars to 25 miles per hour [1]. This was an

This idea goes back a long way. In 1923 42,000 Cincinnati residents petitioned for mandatory speed governors to limit cars to 25 miles per hour [1]. This was an era when pedestrians typically owned the streets, so the advent of high-speed traffic caused a lot of pedestrian deaths. 1: https://www.researchgate.net/figure/The-Cincinnati-speed-governor-referendum-frightened-motordom-into-organizing-to-reshape_fig1_236825193 https://www.researchgate.net/figure/The-Cincinnati-speed-gov...