TFL Cycle Superhighways

But in other news, good to see the traffic moving smoothly in the background.

I don't know when the video was filmed, but traffic usually moves just fine outside the peak hour, if there are no unusual events. (All the design constraints imposed by TfL only relate to the times of heaviest pressure (the morning peak, as the evening peak is more spread out) and because most people go to and from the same destination (Central London) at the same time.) London has vast traffic over-capacity but doesn't use it because of the poor organisation of the city, which the huge amount of development largely in the centre is making worse.