The first hypothesis is the normal free-flowing condition, when the main need is to provide for the occasional breakdown.
A central lane is being inserted for right-turning vehicles leaving one free-flowing lane in each direction.
In fact, our motorways are the least dangerous of our roads, particularly when they are free-flowing.
It is a classic example of a gummed old vein being available instead of a free-flowing artery, as is required.
Atmospheric pollution will be minimised by the transfer of many slow-moving vehicles from confined spaces to a free-flowing road.
In congested conditions, with slow-moving or stop-start traffic, vehicle engines are significantly less fuel efficient than in free-flowing conditions.
It increases atmospheric pollution whereas free-flowing traffic cuts down on emissions and saves fuel.
One criticism that can be made of this part, in other ways very free-flowing and interesting, is that short biographies of the economists under discussion would have been very useful.
