Brent P, > was motivated to say this
in rec.autos.driving on Wed, 30 Nov 2005 11:07:04 -0600:
> I've argued the same thing here many times. I am consistantly told I am
> wrong. The problem is that on a road that has so many users on it is that
> there is always another lane blocking sloth to screw up the additional
> lane(s). So many that they can easily establish blocking. The lane
> growth has to out pace the traffic by a very significant margin.

For which you can thank people like "Laura Bush murdered her
boyfriend," and the reso of its naderite ilk.

> This is why driver behavior is so important to capacity. I came to this
> conclusion when I experienced traffic that would have crippled a flat
> straight chicago 4 lane arterial with such frequent traffic lights flow
> smoothly on a 4 lane road in Germany laid out along a winding path
> probably laid out in 16whatever.

Well, if the cops here would concentrate less on a number on a sign and
more on truly dangerious drivers - like the afore mentioned killer - we
could also have roads like you described in the paragraph above...