This undated photo provided by the University of Michigan College of Engineering shows vehicles as they drive through the Old Woodward Avenue and East Maple signalized intersection, which was retimed using the Optimized Signal as a Service , in Birmingham, Mich. Smarter vehicles could mean some of the most dramatic changes for the traditional traffic signal since the yellow light was added more than a century ago.
A few years later, Detroit police officer William Potts is credited with adding the yellow light, though as a city employee he couldn’t patent it. By 1930, Nelson wrote, all major American cities and many smaller ones had at least oneGM’s Cruise robotaxi unit hires veteran Ford and Apple official to be its safety chief after crashAmong those reimagining traffic flows is a team at North Carolina State University led by Ali Hajbabaie, an associate engineering professor.
Using such an approach would be years away, as it would require 40% to 50% of vehicles on the road to be self-driving in order to work, Hajbabaie acknowledged.