Reuben Jacob Smeed CBE (1909–1976) was a British statistician and transport researcher.[1][2] He proposed Smeed's law which correlated traffic fatalities to traffic density and predicted that the average speed of traffic in central London would always be nine miles per hour without other disincentives, given that this was the minimum speed that people will tolerate.Count Steer wrote: ↑Thu Aug 25, 2022 2:30 pm I still predict automation will slow everything on the roads down for quite a few years, which will be novel as it usually speeds things up. (What was the average speed of that car in London, during lockdown?).
https://en.wikipedia.org/wiki/Reuben_Sm ... 20tolerate.
Answered By: The Mayor
Date: Monday, 21st October 2019
Long term general traffic speeds in London are measured for central, inner and outer London using GPS-based data for key roads. Weekday (07:00 to 19:00) speeds from 2008 to 2018 have changed from:
8.7 mph to 7.1 mph in central London