American Speed Limits Are Based on 1950s Science

Around 40,000 people still die on American roads every year, but technology and data could change that. Image: Garrett/Flickr Speed limits might make you feel safe, or incredibly frustrated, or both. But either way there’s a bigger issue at hand: they’re based on outdated data and science from the mid-20th century. In the US, our speed limits are derived from old studies, like this one from 1964 by traffic systems researcher David Solomon that looked only at rural roads in the 1950s. In line with conventional thinking, Solomon’s study fuels the premise that speed limits should be based on the speed at … Read more