Why would the speed limit on the highway be 70mph in a world of autonomous vehicles? Research indicates that a raise in the limit to 80 or 85 mph would be perfe

Why would the speed limit on the highway be 70mph in a world of autonomous vehicles? Research indicates that a raise in the limit to 80 or 85 mph would be perfectly safe - the only reason for a 70 mph limit is to cope with heavy traffic. http://www.iam.org.uk/media-and-research/policy/our-policies/motorway-speed-limit http://www.iam.org.uk/media-and-research/policy/our-policies...