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The Great Roundabout Thief. - Off in the distance
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May 2016
 

The Bellinghman
Date: 2009-04-14 11:47
Subject: The Great Roundabout Thief.
Security: Public
Tags:roads
As we were about to join the A1 on the way up to Bradford for Eastercon, bellinghwoman commented that although the A1 is probably a less saturated transport link than the M1, it does have a number of roundabouts on it.

We then proceeded to encounter a grand total of one roundabout between there and the southern outskirts of Bradford, and that one was being swarmed by traffic cones. In two places, our SmartNav asked us to negotiate now-non-existent roundabouts, and there were two other places that roundabouts had disappeared since I last drove that way about two years ago. That's an 80% reduction in the 110 miles that we covered.

However, you should not take that as indicating an imminent death of the species. Oh no, far from it, for as roundabouts have been disappearing from some places, they've been appearing in others. On the A1198, we crossed 15 roundabouts on our way home, 75% of the count for the entire journey in a mere 20 or so miles. The bypasses for Papworth and Caxton each add three previously non-existent rotary interchanges.

I suspect that although roundabouts are being taken off the longer, faster routes, they're being added in large numbers elsewhere with the creation of village bypasses. Since such a bypass usually has a roundabout at each end, and with many villages being effectively based on crossroads, I would guess that the modal number of roundabouts per such bypass is three. (Towns tend to have more roads meeting, so for a town bypass, I'd guess four.)
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surliminal
User: surliminal
Date: 2009-04-14 13:12 (UTC)
Subject: (no subject)
i enjoyed this post!:)
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The Bellinghman
User: bellinghman
Date: 2009-04-14 13:22 (UTC)
Subject: (no subject)
Oh my, you must be feeling poorly!
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aardvark179
User: aardvark179
Date: 2009-04-14 13:57 (UTC)
Subject: (no subject)
I'm not sure if roundabouts are being moved, but there are more traffic calming things being added to roads, which do require lots of extra bollards. Have you considered that this is really what they are after, they're just acquiring them in a roundabout sort of way?
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The Bellinghman
User: bellinghman
Date: 2009-04-14 14:02 (UTC)
Subject: (no subject)
AArrgghh!!
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Ross
User: crazyscot
Date: 2009-04-14 16:59 (UTC)
Subject: (no subject)
Autumn and winter 2007 was pretty bad for the trip north, the A1/M was a right old mess with what felt like a 3 mile tailback at every roundabout (or at least, all those that were being worked on). It's an awful lot better than it was, though as you'd have seen the work is still ongoing.
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The Bellinghman
User: bellinghman
Date: 2009-04-14 18:45 (UTC)
Subject: (no subject)
Well (and as you presumably noticed, since I assume you also used the A1/M62 route), it's much better now.
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Ross
User: crazyscot
Date: 2009-04-14 18:50 (UTC)
Subject: (no subject)
Indeed. Still the one they're working on that was crunchy for us both ways (Newark/Grantham sort of way), but I hope that'll be gone by this Xmas. The non-mway section north of Peterboro is crying out for upgrade next, I suspect; that and the dualling of the Borders and Northumbria section, but when did those ever get funding priority...?
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The Bellinghman
User: bellinghman
Date: 2009-04-14 21:30 (UTC)
Subject: (no subject)
And then there's the bit around the Black Cat, which has some interesting bits.

Given traffic levels up round the borders, I can see them not bothering to upgrade that section for quite a while. I've never found that bit congested.
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Run away to DreamWidth. Come with me.
User: reddragdiva
Date: 2009-04-14 18:32 (UTC)
Subject: (no subject)
If you remove one roundabout, does another one automatically pop up somewhere else?

Are roundabouts conserved?
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The Bellinghman
User: bellinghman
Date: 2009-04-14 18:43 (UTC)
Subject: (no subject)
Aha. You saw this post's subtitle before I removed it.

(And before I actually posted it.)

Yes, it does appear so. However, there were 4 roundabouts removed, and 6 added, so it's not as simple as a simple count would indicate. I think you have to consider the size of the roundabout as well. It might be lanes round it, it might be number of exits, it might be pure area. Without further research, we can't be sure, which is why I removed the subtitle.
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