From: John Woodgate
Subject: Re: How to perform clock recovery from 1152 kB/s as easy as possible ?
Date: Sun, 8 Sep 2002 08:21:58 +0100
Organization: JMWA Electronics Consultancy
Reply-To: John Woodgate
NNTP-Posting-Date: Sun, 8 Sep 2002 09:42:30 +0000 (UTC)
X-Newsreader: Turnpike (32) Version 4.01 <5Z8C9wtxbnpWyFnyfFzqmVF739>
I read in sci.electronics.design that Matt Timmermans
wrote (in ) about 'How to perform clock recovery from 1152
kB/s as easy as possible ?', on Sat, 7 Sep 2002:
>Lights at roundabouts! I've seen those! In fact, in the version I saw, you
>needed to go through *2* sets of lights to make a tight (i.e. left in
>England) turn, and more to make a wider turn or to go straight! The lights
>were timed, of course, to work just like an intersection, but they needed so
>many lights so that you could always see the appropriate ones from wherever
>you were in the roundabout. Whoever designed such a ridiculous thing had a
>serious problem with anti-intersection bigotry.
Lights at roundabouts work very well. I'm just a motorist, not a road
planner and some of the things the planners do bemuses me, such as
building a wide road and covering two-thirds of it with diagonal lines
that mean 'out of bounds'.
At British roundabouts, you give way to traffic from the right. If the
road on the right has more than one lane, and there is a queue in its
left lane due to traffic from *its* right, you can't see Jack the Lad
coming down one of the empty lanes at high speed, ready to slip into any
tiny gap in the traffic.
If the right-hand lane of a multi-lane road on your left is obstructed
but the left lane isn't, Jack the Lad in that lane can't see YOU.
>Oh! oh! and those intersections with dots?!?! If you put a little concrete
>discus (about a foot in diameter) in the middle of an intersection, it
>becomes a roundabout, so it's OK that there are no stop signs.
There is no need for stop signs because the site is a roundabout and
that invokes the rule 'give way to traffic from the right'
>of anti-intersection bigotry. Being from Canada, I treat those just like
>intersections without stop signs, which are much preferable to roundabouts.
>I can just see the urban planner's mind blowing... "he's just sort of
>dodging the roundabouts... but you *can't* dodge a roundabout... They're
>round... You have to go *around* them... Do you suppose that the roundabout
>only exists by concensus?!?! That it's a roundabout only because we believe
>it to be a roundabout?!?! Even so... we put the discus there so the
>ignorant Canadians will *know* it's a roundabout. Do you suppose he just
>refuses to believe?!?!?" and so on...
I suspect that one Canadian didn't know about the 'give way to the
>Now, those multilane roundabouts *without* lights... If you're going a
>long way around, you're supposed to go to the inner lanes. If you're going
>only a short way around, you're supposed to take the outer lanes. This
>minimizes that amount of traffic crossing that goes on.
Not in Britain! The left lane is for the first exit, the next is for the
second, and so on. There are usually arrows on the road surface that
>The problem is that there's still a lot of traffic crossing, and it's
>completely uncontrolled! Somehow people in roundabouts manage to navigate
>them without getting into accidents. I've done it myself many times, and
>I'm convinced that people have some latent psychic abilities having to do
>with circular traffic crossings.
Some people go round them the wrong way.(;-)
>I'm sure that the germ of genius in the original roundabout idea was to take
>advantage of these latent abilities. Unfortunately, anti-intersection
>bigots refuse to discard the concept when it no longer applies.
>P.S. If you want to do some *real* psychic driving, head on up to Scotland
>and all those "passing places"...
It does take practice to read the mind of an approaching driver to
determine whether he is going to use the passing place nearer to him/her
or expects you to use the one nearer to you (even if you have already
passed it!). But all Scots are uniformly courteous, so it's only
tourists that fall into the second class. (;-)
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
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