Please report dangerous drivers to the police - Roadsafe. Report to plod, not just whinge here.

We could debate the term "motor traffic capacity" :)

What's "better":
a) a 1 mile queue of vehicles feeding into a single lane bridge, left lane relatively empty for left turners and two wheelers
b) a 1/2 mile queue of vehicles, both lanes chocker, no room for anything on two wheels, left lane merging in the middle of the junction.

The flow rate on the bridge is the same - it's a single lane - but with both lanes full, left turners and other road users are stuck in the queue.

What's better is less motor traffic. Increasing motor traffic capacity will generally increase motor traffic. After a while, the new capacity will be full and the net outcome will be worse than before. Delays to drivers will end up being about the same as before, with the difference that more people will drive, which in the inner city for the vast majority of journeys is not the most desirable mode of transport.