That’s a great statistic. Probably used figures from roads that had previously had roadworks on them. When the roadworks are gone, traffic flow speeds up.
But on a more serious note, it did always look like a lot of the traffic was created by manual switching of traffic lights by individual police boxes with no automatically coordination with the next set of lights down the road, so any technology to improve this is welcome.
London fiddled the statistics with the introduction of the congestion charge by the way. They increased the amount of time given to pedestrians to cross every junction, therefore keeping traffic at red lights for longer, for more than a year before the charge was introduced, which created almost gridlock.
”Look at the terrible traffic”
then introduce the charge, reset the lights and as if by magic, traffic improves
”Look at the improved traffic flow because of the congestion charge”
I don’t trust any of them.