That’s why it’s speed dependent. In the video, he says it’s different on a motorway when it’s high speed and makes a mention of those bombing down to the end. However, if the traffic is at a slow speed, it is perfectly ok for both lanes to be used and it is what should happen. Yet I regularly have seen endless queues at a standstill, when we could have half the traffic in one lane and half in the other, still at slow speed, filtering in as it is intended and with less clogging of roads.
