Quote Originally Posted by superfeathers View Post
That makes no sense at all. You couldn't previously exceed 30mph, it's the same thing, except slower.

Car coming out of junction onto 30mph traffic knows he/she can't go over 30mph pulling out, but has 30mph cars going each way.

Car coming out of junction onto 20mph traffic knows he/she can't go over 20mph pulling out, but has 20mph cars going each way. So it's easier. They're going slower. Cautious drivers will love this.

The people who won't love it will be the people who rev the shit out of their cars to zip out of a junction really quickly over 30 will be caught short. But it'll mean those people shunt into the back of queuing traffic less. Another benefit.
of course it makes sense you're just not thinking clearly.

in a flow of traffic at 30mph the gaps between cars will be greater than if they are travelling at 20mph. All the dithering idiots waiting at junctions to join the flow of traffic, the gaps between cars are now going to be smaller, meaning they are less likely to join the traffic in an expeditious manner. Instead they'll wait for longer waiting for a gap that they feel comfortable joining.